Yuuguu is the service that makes online collaboration with meetings and file sharing easy and free. It supports collaboration of up to 30 people and other features include the ability to share documents such as Powerpoint files that can be viewed directly from you browser with colleagues. The service also lets you remotely help friends. You can also make local and international calls. Yuuguu generates revenue from conference calls you make. They’ve recently added new features such as IM integration with Windows Live, Gtalk, Yahoo, ICQ, and AIM so you don’t have to sign in with multiple accounts and networks to IM or even download a client. There is a lot of copmetition in this space, including comparable services offerred by Microsoft’s Live Meeting and Ciscos WebEx Via