Justin’s Brew Review has posted the roundup for The Session #77: Why IPA is a Big Deal. That 32 bloggers found time to write provides a bit of commentary unto itself.
Justin provides a summary, although (as always) reading the full post (and clicking a few links) is recommended:
1. HOPS! for the taste/flavor
2. Different than mass-produced “macro” beer
3. Hype/abundance of supply