You know rec50? This is the half-assed, slacker version.
Here, instead of writing well-considered, thorough recommendations for 50 stories over a period of months, we list 50 stories all in one go. It's much faster, but (unless someone gets to feeling particularly conscientious) the reader gets much less information about a particular story. Of course, depending on the specificity of a list's theme, a reader may not need many particulars. Themes like "incest fic" or "threesomes" aren't exactly vague.
Want to give it a whirl? Guidelines here. Want some structure for your list? Try one of our lovely prompt tables.
Or if you want to see what you'd be getting into first, previous lists are here.