Should I join Facebook?

You should join facebook, first reason because facebook is larger than myspace. I've checked at alexa rating, faebook rating is 4 times more popular than myspace, that's mean the network of friendship you build on facebook could have bigger possibility to grow, whether is just for friendship, or even to do business like promoting your online business or something else. It's not time consuming, it's the same like checking your email, do you think it's time consuming? For me it's not. You actually saving your time of searching your old friend via facebook. If you want to find your old and lost friend, such as your kidergarden friend, facebook automatically will search it for you, saving time of course. I checked my FB everyday, and almost everyday FB automated friend finder system showing me suggestion of my old friend. Sometimes I get shocked, because I never imagine will find them again in my life, but FB "magically" find them for me. It's fun and no need big effort to maintenance, as well as your email account.

yes you should..cause its so amazing its just like friendster to...but i think facebook is better...

I think you should join Facebook. I am totally addicted and it doesn't take much time at all.

Social networks exist for that purpose: social networking. As you said, people use it to share pictures, information, etc. with a large number of friends at once. Remember, this is the intended purpose, that's not to say people only use it for those reasons. I wouldn't consider it too time consuming. Nearly everything that involves you will be sent to you as a 'notification', meaning once you have gone through the list and gotten yourself caught up with all that is happening, you're free to close the damn page and go do something else. But then I am not sure what is so time consuming about Myspace for you, perhaps if you give an example I can better answer your question. I can't answer the profitability question.