IPO might still elicit thoughts of Initial Public Offering for many around Boston. This week it stands for International Pop Overthrow. About a thousand bands each take stage for a short set at the Paradise Lounge before the next act gets up. Ok, so it's not a thousand, but there are at least 40. The festival kicks off on Wednesday with Bostonist favs Anuska Pop and play all week. Each show is $10 and......