I actually did get caught up in one last year. Me and this girl met on twitter and we would constantly talk, then we started IM'ing throughout the night, then video chatting all night on stickam and msn. Then we started talking all day on XBL and texting on our phones. Basically we were constantly talking, and this went on for a year. Pretty much just ended 2months ago, because her parents didnt like it. She lived in Maryland and me in Connecticut, we had planned to meet this summer at Ocean City, but unfortunately wont be happening.
overall do i think its worth it? NO! an online relationship is just the thought of something real.