I used it way back when I first got gmail, it's pretty nice. I have a 1GB thumb drive so it replaced my gmail drive, but other than that I'd still be using it.
Its quite stable ... and i've used it myself and i find it pretty good for temporary file storage, i can retrieve it whenever i need to, but i still stick with my hard drive seeing as though my upload speed isn't so great
Just tried it out. I don't see what's so special about this since you can only upload files up to a max of 10MB. It's just a slightly more convenient than sending attachments.