There's a very good version of exactly this existing over the domain "stuff a lefty academic would find interesting." Which is rather bizarre category, on the face of it - Derrida and Andre Gunder Frank have nothing in common in terms of methodology or subject matter, united entirely in terms of peoplespace - but peoplespace (in this case I'm guessing "grad students who don't want books cutting into the ramen budget") is how informal networks operate, so.

(The two best free legal resources for Ye Olde Classics of Social Thoughte, marxists.org and the Library of Economics and Liberty, are ideologically flavored as well. You can take this as a sign that the social sciences are woefully riven by bias or just accept that the questions are ideological by their very nature.)