[WitnessX]

Happened across a blog that blogged about a new service called "Wish You Were Here". Kinda cool. Its Free until... the end of today 2/4 - it'll cost $1.99 after. Their mobile website is wywh.mobi, and is in Pre-Release beta. Seems simple enough (as copied from website):

1. Send us an SMS
Type the keyword WYWH and send it to the number 69626

2. Send Photo
Click on the email address in the SMS and send us a photo using your Picture Mail or MultiMedia Messaging (MMS)

3. Add Message and Address
We will confirm we got the photo and send you a link for entering the caption, message and address.
4. Pay
When we get everything you can charge to your phone bill or pay by credit card. Your postcard is on its way!

Supports AT&T, Sprint/Nextel, Boost, CellularOne (?!), Virgin Mobile.