Using cl1p.net, you can create a URL that starts with http://cl1p.net/ (for example http://cl1p.net/deadline) and type a block of text. You can also upload a file smaller than 2 MB and password-protect the page.
Why is this useful? Maybe you want to send a small file to someone and you don't want to deal with email or FTP. Or maybe you just want to save a note or some code. It's like your personal Wikipedia.
Related:
Live Clipboard
Google Base - your personal database