Virtual Mail Post is a mailbox, scanning, and mail-forwarding service that lets you receive your mail at a California business address. They scan it quickly and provide it for your viewing, then keep the scans on-line for you. Might be worth looking into! The cost varies (after the end of the promo), with prices ranging from $20 to $150 per month, depending upon your needs. They have a strong privacy policy. The service itself might be useful in protecting your privacy, but also useful for people who travel a lot and can't easily get to the post office to pick up mail.
http://www.virtualpostmail.com/