Are you on Friendster? I am. For quite a while now. But honestly, I rarely update my profile and I do not surf through it as often as some people do. But when I do, I am always surprised by who I find. I am such a bad contact I do not even greet my friendster-friends on their birthdays even if I get alerts.
I am sooo lazy in that aspect, I rarely reply to their messages, if I get one. That’s the very reason why you won’t find me on other popular social networking sites.
However, email-wise I am so active I won’t end the day without replying to your email. So just shoot me an email instead of via Friendster (or via YM because mine is off all the time) or you can comment to my blog as well (as long as it won’t offend the general readers, I will approve it). 
Besides if you know how to use the internet and its search engines, you will definitely find me.