Does she like board games? Scrabble? Backgammon? Chess? Card games? Anything like that? If so, being able to find people to play against at any level, at any hour, without having to be presentable seems like a nice win. No need to get into newfangled games when the old ones can be just as enthralling with less of a learning curve.

(A friend and I wrote dailygammon.com , a free backgammon site)