Oh yeah, this is killer-app-tastic alright.
You get a tonne of storage space free with your GoogleMail account, right? This slick little widget lets you drag and drop files onto your Gmail account as if it's just another drive on your Windows PC. Tres cool, methinks. Don't be a moron and risk critical files on it, of course, and read the documentation. Oh, and if you're on a shared PC, bear that in mind, too, eh? And, oh wait, I'm not your mother. Take care of yourself. Sheesh.