User blog comment:F Deity Link/This Wiki should have a CUUSOO account.../@comment-30610591-20130423213513/@comment-5955017-20130426115315

The key is to structure it in a sentence that is not considered off topic, or perhaps contact the authors of the projects by another form (email, Facebook, etc...).

Basically, refrain from saying something along the lines of, 'stop in and see our wiki' and instead mention that his project has been featured on the wiki.