I downloaded and installed
Dropbox, and as I start using it I find I like it pretty well. It's seamless and painless, so long as you accept that editing files via the website requires downloading and re-uploading them again... and now I can coordinate my two main computers, my auxiliary laptop, and any smartphone I eventually get without worrying about where I left certain files. It integrates fully with Nautilus under Gnome, and plays well with Android; Windows 7 is quite happy with it.
I suspect I'll still limit it to individual files I might need to share with myself (rather than huge chunks of my home directories), but for the job-hunting notes and to-do lists, plus supporting files, it's doing a bang-up job so far. Not sure whether I'll use it for public sharing (as opposed to my website), but that might be handy later on.
I thoroughly read the terms and conditions, and they seem quite reasonable. Dropbox explicitly states that any files you put in your Dropbox folder belong to you, and you retain all rights and licenses; they reserve the right to handle the files only so much as they need to in order to provide the service (and comply with legal obligations). I'm comfortable with that.
If you check it out and decide to sign on, let me know -- I can get both of us a 250Mb bonus on the 2G free account.