Findings:
- URL resolver
- URL shortener
- Short URL Lookup (superdoc)
- URL=
- Mister URL (user)
- clean URLs
- Semantic URL
- url shrinkers
- URLs as node titles (collaboration)
- URL escape sequences
- URL filtering
- Everything2 URL Interface
- Pasting Node URLs
- Blocker
- If you're allowed one phone call at a police station why not one URL instead
- palindromic URL
- Quoting URLs in Perl
- URLs are cool now
- pronouncing URLs
- URL
- TV pop up ad blocker
- Dan Blocker
- Alpha-adrenergic blockers
- calcium channel blocker
- beta blocker
- alpha blocker
If you Log in you could create a "URL blocker" node. If you don't already have an account, you can register here.