[This page](https://meta.superuser.com/ads/display/3957) contains statistics for the current community promotion ads. Unfortunately, it does not contain enough data for users to judge the numbers that are shown.

Are all ads shown equally often? Relative to the number of votes received? Randomly? *How often* is each ad shown?

Without this information, the number of clicks is telling us nothing about the success of the ad (Clickthrough Rate). Do users just not care about Greenshot and Twitter, or is something else going on here?

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So, how often are the individual ads shown relative to each other? Is it roughly equal for each ad, or is it a more advanced formula?