Some additional Friendster issues

Always fascinated by the world of dating and sending signals (I was an interpersonal communications major in college, the bug is still with me), I've been wondering how "Friendster" plays into the role of dating in the current age, besides being a relationship catalyst. Some questions for the folks out there:

• If you start seeing somebody and then "friendster" them, is that a sign that you just want to be friends?
• If you stop seeing someone whom you've "friendstered," does proper etiquette dictate that you "de-friendster" them, or is that just cruel?
• Is it okay to signal to someone that you want to stop seeing them by "de-friendstering" them?