I decided to recommend Drop.io to help you get files from here/you to there/them, but waited to try Dropbox first and compare for you.
The quick and dirty*: Dropbox has a larger free storage capacity (though Drop.io welcomes multiple accounts) and all around, Dropbox works extremely well; it’s iDisk-like but better. After testing though, I’ve decided to stick with Drop.io.
Drop.io works better for me at work than Dropbox (something to do with the firewall or proxy) and Drop.io doesn’t require any installs. (Neither does Dropbox technically, but Dropbox’s web interface is nowhere near as slick as Drop.io’s… see video.) So for those in a heavily regulated IT environment, Drop.io rocks. And bonus points for the name.
Drop.io also has approximately one bajillion ways to get files to your “drop”. My two favorites (neither of which Dropbox offers), in real time:
* 140 words is way too few for a thorough review, so I’m just explaining my own reasoning. Both sites have excellent overview/tutorial screencasts if you would like to learn more.

