Web 2.0 twitter, facebook, myspace, youtube?

[chvs2000]

How much does a facebook or myspace or twitter app developer makes? Can i make a living out of it.

I am a web developer in java.

[shec0002]

If you are a java developer, there are better ways to make money than web apps. If you make apps for those sites, you will only make money as long as they are in business, and willing to let you make money, which may not be long, or may be for a long time.