Today’s funding and acquisitions news roundup from across the web:

Social Media

Travel Search Engine Kayak Files For $50 Million IPO (via TechCrunch)

Twitter Raising New Venture Round at $3 Billion Valuation (via TechCrunch)

Social Classifieds Service Oodle Buys Grouply (via TechCrunch)

LivingSocial Spends $5M On Controlling Stake In Social Shopping Site JumpOnIt (via TechCrunch)

Mobile

Verifone Acquires Electronic Payments Company Hypercom For $485 Million (via TechCrunch)

Gaming

GameGround raises $5.3M for gamer social networking app (via GamesBeat)