Bitcasa is the new Dropbox, but with the ability to sock away files, which is perfect. I tried to archive files to Bitcasa (on OS X) and it won't work. Can this be added to Hazel?
If it appears as a normal folder in Finder it should work though I haven't used bitcasa so I can't say anything specific about it. I suggest trying it out and posting specific problems that you run into.