Ask HN: Have you tried a snail-mail-to-web (virtual mailbox) service?

Dear HN: I'm a hacker currently based in California. I'm looking to take on the on-the-road lifestyle -- travel to Asia, and hopefully try to support myself by building iPhone and Mac apps. I'd like to have a place to receive occasional snail mail while on the road.

Googling a bit reveals some services that will accept your mail via their PO Box, and show scans online, for something like $20 per month. Examples of companies I found are Virtual Post Mail and Earth Class Mail. Unfortunately, it's incredibly hard to tell if they are in fact legitimate or trustworthy. If you have actually tried one, I would highly appreciate your feedback of how it went!

Thanks.