(Sorry, should have been #KeenSpace / #ComicGenesis, rather, #KeenSpot being the “pro” service.)
And sure enough, SmackJeeves is no more and KeenSpot & ComicGenesis aren't looking that good either. At the same time, “Big Social” (esp. Facebook and Instagram, but also Twitter) has gobbled up much of the mindspace, and a general effort to monetize on the phenomenon (artists want to eat too, how greedy of them!) has shifted to more professional or semi-professional oriented services.