Facebook is generally regarded as one of the most entertaining social networking sites. However, it has it own advantaged and disadvantages. Facebook's advantages include keeping in touch with long lost friends, playing games and offering many fun applications. The disadvantages include the problem of "Facebook stalking" and theft.
Google Wave is an online collaboration tool that helps people communicate and work together on projects. Presented at the Google I/O conference in May 2009, the web application combines a variety of social networking tools such as wikis, email and IM into one program that allows work on a project to take place in real time.