I don't know what a Twart is, but Comic Twart is a blog featuring outstanding comic book illustrations by awesome artists around a common theme each week. Or as they say, "A different character every week drawn by a bunch of TWARTS!" It's a staple of my Daily Art Fix and should be featured in the news reader of anyone who loves the medium. For instance, here's one from the Thing week by Ramon Perez:
Browsing the archives is a great way to find inspiration and blow a couple of lazy hours on a holiday weekend.