Felt App

Since I post about stationery that I love almost weekly, it won't come as a surprise that I keep a stash of stationery (organized by occasion) around at all times.  That said, I occasionally find myself without the right card for a particular occasion.  In this month's InStyle, I read about Felt, an app for the iPad that allows you to pick from a selection of cards, use your stylus or finger to handwrite your note, and then Felt prints, seals, stamps, and mails your card for $4. I can see this coming in handy for those last-minute cards you need to send, when your traveling, or if you are someone who doesn't keep cards around but still loves to send them.  Has anyone tried Felt?  I'm going to test it out and will report back!