Danger: Using Web 2.0 at 40

I've always thought of myself as a techie. I covet the new gadgets and try to keep up with the latest developments. But I have to admit that lately I can't keep up with the Web 2.0 world. There are so many choices and no standards. Open source and social networking (whether micro or macro) are starting to junk up my bookmarks (oh yeah and there is site to sort those too). Is this what happened to my mother when e-mail first hit the scene? I barely keep up with Facebook let alone with the Twitter, Jott and Ning's out in the cloud. 

OK, yes it's true I love my iPhone but where do I draw the line? I am excited about the Loopt technology coming with the 3G iPhone. I've always thought it would be great to know if you're at the same concert or airport with someone you know. When will I know that the world has passed me by?