notlong is a new short url service (TinyURL, EvilURL that packs in some clever features. Short URLS are generated as subdomains and also generating a password to both edit the long URL and view some click-through stats. The author also hosts an overview of various url forwarders .
Speaking of cleverness, Dan Kaminsky‘s talk at LayerOne this weekend was very much so. It was mostly about very ways to (ab)use DNS, using distributed recursive lookups as a communications channel, for file transfers, radio broadcasts. Also, a 3D-plotting tool for visualization, and communicating via third party DNS servers via last-lookup bit leakage.