Trey Graham

I'm 45, single, substantially in debt and way too susceptible to jokes about redheads. And I'm telling you these things upfront because ... why not? It wouldn't be all that hard for you — or your Big Brother — to find out.

Once upon a time, it was MySpace. (Huh. Turns out you can still link to it.) Then Facebook happened. And Twitter. And beyond those two dominant social-media platforms, there are a host of other, newer options for staying in touch and letting the digital universe get a look at your life. And for certain kinds of sharing, some of those other options make more sense to tech-savvy teens than the Big Two do.