Signal vs. Noise - When a comment is marked as trolling, the comment appears in Comic Sans, lighter color and has a troll face next to the comment author.
/via Sergio Ruiz
37 Signals - Blog post header text changes with size by dropping non-essential words as the browser viewport gets smaller.
/via Razvan Caliman
Ta-da Lists - Remembers the username / email you entered and pre-fills it on the “forgot password?” page.
/via Caleb Lyons
Basecamp - Speech bubble is green if the item contains unread comments.
/vis Shaun C.