http://www.japan-guide.com/penfriend/ is a really great one as well. It’s kinda based around wanted ads which you can reply to or post your own, so it’s great if you’re looking for a friend for a specific reason. Just make an ad explaining you want a Japanese friend to talk to for practicing spoken Japanese, and that you’ll help them with English. Or you can simply reply to an ad posted by someone else. You can even filter the ads so you can find someone of a specific age or location. There’s even a option for whether you want a penfriend or someone to hangout with in Japan. I met a Japanese friend on there last year and since then we’ve done plenty of videochats and exchanged pictures, and this past Christmas we did a snack/gift exchange. She even picked up a few of my mannerisms so if you encounter a Japanese girl that speaks English like she’s from Philly, there’s a good bet…