"I own the collection of comments on my blog, and you own the comments you've placed on my blog and all others. I should be able to back up a complete set of comments on my blog, and also back up a copy of all comments I've placed on all blogs."
Free transfer for files up to 2GB for free, password files, customize how many times each file can be downloaded and how many days it will be available, ZIP and encrypt multiple files.
Adobe Share allows you to share, publish and organize your documents, e.g. embed a Flash preview of your document on any website. OK, it's a beta, doesn't seem to work for me.