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Which Facebook Ad formats work best? A test comparing Boosted posts vs promoted posts vs separate ads

Boosted Post vs Promoted Post vs Facebook Ad

Is it best to boost a Facebook post, create an ad using the post or create a separate ad that's not in newsfeed?

I used to strongly advise clients against “boosting” posts on Facebook. It’s not that I’m generally against paying Facebook for reach (although of course a little more free reach would be nice), it’s just that boosting used to be the sloppy, non targeted way that the newbies and amateurs used. It cost them more money, got them fans they’d probably prefer to avoid and whilst quick and simple, wasn’t very clever.

So back in the day, I used to recommend going into the Ad Manager or Power Editor, and creating an ad using the organic post as the source but promoting it rather than boosting it. You got far more targeting control and consequently a wiser use of ad budget.

But in recent months Facebook has radically improved its targeting options on boosting posts. You can target just fans, friends of fans, exclude fans and also add in multiple geographic, demographic and interest targeting layers as you can see below:

Targeting a boosted post on Facebook

So in theory, boosting a post is as good as the more laborious method of creating an ad right?

Well I guess, but what does Google say? Surely someone else has already figured this out? And for sure the usual suspects had an article or two on the difference between boosting and promoting posts, some (including Social Media Examiner) even had an Andrea Vahl article called “Boost Posts or Promoted Posts on Facebook: Which is Better?” but whilst this explained the differences really well and why you might use one or the other, it didn’t actually answer the question on which is best. And there was certainly not an element of testing in sight.

So as with all things digital, best to test rather than assume which is what I set out to do.

The three “ad” variants you should test:

  1. Boosted post
  2. Promoted post (using the Ads Manager/Power Editor)
  3. Newsfeed ad (i.e. no organic reach but looking like a normal post but with the word “sponsored” at the top and created in Power Editor)

What constants and variables between Facebook ad types?

The offer we were testing was for a free webinar - so this test gives an idea of Ad Clickthrough rates you can expect in Facebook. The image used was identical as was the landing page. The copy was identical with the exceptions shown below which also serve as a neat comparison of what you get in different ad types vs organic posts):

Facebook organic post in newsfeed

The post will show organically to (some) fans. To get better reach it will need to be boosted or promoted. Once you do either of these you can broaden the targeting beyond fans to other Facebook users.

If the “Boost” button is used, the boosted post will be shown with a “sponsored” message to a larger number of fans and also to the other targets I selected. It looks identical to the other method of increasing a post’s reach (shown below) where the post has been promoted to create an ad.

Ad created from a post on Facebook

The “Promoted Post” Ad above is created from an organic post. The ad will be shown with a “sponsored” message to a larger number of fans and also to the other targets I selected. The url can’t be changed in this ad format (no vanity endings). The “Like Page” CTA will only appear to non fans. Like, comment and share data will be seen both on the original post, the boosted post and the ad.

Finally, the other variant I wanted to test is a pure ad (shown below) which I created in Power Editor but looks identical to the Boosted and Promoted Posts only I am using one advantage of Power Editor ad creation by creating a vanity url ending.

Ad on Facebook created in Power Editor

Testing Bid types, placement and budget

I used Facebook’s preferred bidding method on all the ads (effectively Optimised CPM with the objective of clicks to website – effectively the same as for a boosted link post). With this method Facebook will show the ad to those most likely to click.

I allocated a budget of £5 a day for each ad variant and ran the test for three days. Keeping the budget low was quite important as I didn’t want to overwhelm these identical target audiences with over frequent repeats. With a potential audience of 192,000 it’s likely that only the fans (numbers of these are tiny as it’s a newish Page) would see the ad variants too many times.

Targeting was identical across all three paid for options and right hand ads were deselected:

Targeting an ad on FacebookBid types and optimization

Other things to note about the limitations of some ad types: tracking

I used Facebook’s conversion tracking pixels (these tracked both clicks to the website and also conversions on our Eventbrite ticket page) but I also used Google’s UTM coding to further track effectiveness in Google Analytics. The original post had one UTM code which was picked up in both organic, boosted and post ad actions. It’s not possible to separate these of course because Facebook uses the url from the original post. This is worth knowing if you really want to drill down in your monitoring. For the separate ad I created, I was able to tweak the UTM code so this was tracked entirely separately.

It’s also only possible to track multiple conversion pixels in ads created by Power Editor. I had two conversion goals – clicks to the website and ticket “purchase”.

The results. Which method is best?

First it is important to note that this is one single, small-scale test and I would strongly advise you to do similar tests on your own Page before adopting a single approach.

Overall the campaign itself was nothing to write home about. The Relevance Score on the ads was low – 3 to 4 out of 10 (it’s likely that Facebook considered the audience too broad and low overall click-through rates reinforced the reason for the low score).

Here are the key metrics. I’ve highlighted the best scores:

Boosted vs Promoted post vs ad results

The Boosted Post certainly wins for Reach providing pretty much double the reach for the same budget and this is in spite of it having the highest Frequency (note I have used the Cost Per 1,000 People Reach metric rather than CPM to adjust for this discrepancy in Frequency). The Ad, however, resulted in a higher click-through rate and resulted in more people taking actions and thus the lowest Cost per Action.

I’ve not included the conversion numbers as they were relatively small so likely to skew your perceptions of the effectiveness of one type over the other.

What factors may have skewed these results?

The organic post was loaded first – a few minutes before the ad and promoted post were approved. This means that Open Graph recorded the image from that post first. It is well documented that the Facebook algorithm prefers unique images. This may have contributed to the better reach of the boosted post.

The Power Editor Ad and the Boosted Post ended up with Relevance Scores of 4/10 whereas the Promoted Post (identical copy of course) was awarded 3/10 (due no doubt to the lower action rates which are highly valued by Facebook).

Each ad was loaded into a separate Ad Set so as to avoid Facebook prioritising one ad over the other. Of course it still does this between Ad Sets but likely to a lesser degree.

What does this mean?

To be honest, I am REALLY surprised. I had assumed that doing it the “easy” way (boosting a post) would result in a “lazy penalty” because that’s what the average uninformed Page manager does.

I for one will certainly be using the Boost button more often in the future. And on the basis of this evidence, rather than creating ads as ads, I’ll create some as posts and then boost them. With that in mind this is crying out for a second test between Unpublished/Dark Posts and Boosted Posts.

BUT. This was a small-scale test on a new, small Page and with very low ad budgets so do try for yourselves too. And let us know what you find!

Future tests

I plan to repeat this exact experiment with a different ad, and possibly with a different Page.

I also want to run a split test of what happens with ads created in the Ad Manager vs Power Editor. I reckon these will be treated differently.

I am also planning to test whether there is any difference with reach between Unpublished/Dark Posts and other ad types.

That’s all very well but what I’m interested in is SEO for YouTube!

I’f you’re interested in the subject matter of the free webinar I was promoting then do head over to The Digiterati website to find out more. If by the time you read this you’ve missed the free webinar, the topic is covered in depth on our face-to-face training days and also other YouTube webinars.

 

By Marie Page

Marie Page @marie_page is one of the UK’s leading Facebook marketing experts. She is a founding partner of digital marketing consultancy The Digiterati and the Digiterati Academy, an e-learning portal for marketers and entrepreneurs. She recently published a book and online course “Winning at Facebook Marketing with Zero Budget”.

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