Strictly speaking, the functionality offered by Plant Based’s Worml ($4*) isn’t unique to this new Mac App Store release, but this developer has pulled off peer-to-peer file transfers in a cool and easy way. Worml creates ultra-simple file-sharing connections between two machines in a manner that’s actually pretty similar to Lion’s native AirDrop feature, except with some real advantages: you don’t need to be on the same network as the person you’re sharing a file with, and soon there’ll be support for Snow Leopard too.
The concept is simple: launch the app and a spinning wormhole appears on your desktop. You can then drag and drop a document, link, text—really anything, there’s no size limit—onto the wormhole and send it to anyone else who’s using Worml.
If they’re not Worml users, you can send a direct URL-style link to the file on your machine. Since it’s a Mac App Store title, you can install it on all of your personal machines, which could be great for families sharing files.