I'm purging, and I like it!
I have deleted some online accounts I had, and I feel good about. There are some that I haven't touched for a long time anyway. I feel like deleting more accounts...I should be careful though because if, for example, I was going to delete an email account, I have first to make sure that any significant accounts connected to that email address are modified or redirected to a new email address. Get it?
Anyway, that's how I'm purging.
So far, you will no longer find me in Friendster, Multiply, Ringo, and Writing.com.
It's like spring cleaning, only in winter and with Internet things. You should try it! It's good not to spread yourself too much on the Internet anyway.