Questionable links (TinyURL, 0URL, etc) will have a line over them to warn you.
Goatse, tubgirl, IGN logoff, etc will have a red background and blink.
There will be a description after the links in ()s.
EDIT 10/31/08: It now detects over 260 known Rickrolls.
.ad {
/* Your ad can be here instead. 10K unique visitors for $5/day. Mail me. */
}