There is the Community Promotion Ads selection going on in Cross Validated. Link: https://stats.meta.stackexchange.com/questions/2901/community-promotion-ads-2016
Selected ads would be posted in the side bar on CV.
As DataScience is very closely related to statistics, I think it would be a good idea for us to have an ad there, which can improve our site, and also helps users discover our site easily.
So, shall we do it or not?(If Yes, please upvote this post) Would be great if someone can propose a good tagline and a picture for the ad.