[Peregrine]

I know a good many of us have iPhones - what interesting or fun apps have you found on the app store? There's a ton of good ones, but right now I'm fascinated by Distant Shore, by the group that made last year's popular Koi Pond. It's really simple, you walk around on a beach, picking up shells. When you get 5 of them, you get a bottle. Then you can write any note you want, and throw the bottle into the water, where it washes up on some other person's shore who has the app. They discover the bottle while walking, read your note, and can reply to you.

It's so basic but so neat - I just find the message in a bottle theme very interesting, and I've already building some neat pen pal relationships with a couple people. It's so old-fashioned but I'm hooked. 99 cents on the app store.