2GB Limit 50 files at a time Push you to join for free, but you don't need to. gives you a hash directory with real filename Allows you to email link. UNLIMITED Bandwidth. You have to login every 90 days to keep your files.
Google Drive gives you 15 GB free storage that you can share, sync or keep private. They also have "docs" where you can create, share and collaborate office documents online. The downside is they don't have a Linux sync client which makes server access a pain.
Want to setup your own file sharing service? It's easy to do with OwnCloud.
WeTransfer - the easy way to send big files
You can send up to 2gb of files to up to 20 email addresses. Free! It takes forever to upload files. Files are removed after 2 weeks. Tells you when recipients have actually downloaded the files.