In the past we've done surveys of the "most important" or "influential" philosophers of the modern era or the last 200 years. This poll is slightly different: we've taken the philosophers ranked in the top 25ish of the earlier surveys, but are now asking which of these philosophers have had the most pernicious influence on philosophy. I've limited this to serious philosophers, so no charlatans like Derrida or amateurs like Rand, but only important philosophers (no longer living) whose influence might not be deemed to have been salutary. Rank order the philosophers from most to least pernicious in their influence on philosophy (not on the world at large)(you can choose "no opinion" as well, which is certainly a tempting choice for many of these no doubt). Have fun!
Also, don't rank philosophers unless you have read them!