Coda 2 - The sidebar is color-coded to show how “deep” the code is indented on each line.
/via Juan-Pablo Scaletti
Google MapsGL - The shadows cast by the buildings are relative to the current position of the sun.
/via Chaotic
Google Docs - Pressing ⌘+s (ctrl + s) the first time will save the document in the interface, while pressing it again will open the default browser dialog to save the page to your hard drive.
/via Gregory Koberger
Google+ - When searching, the page indicator arrow slides from the left side to the top.
/via Vedran Židanik
eBay - When viewing an item that you’ve purchased in the past, the button changes from “Buy It Now” to “Buy another.”
/via Jason Seney
Asana - The registration process implements the same interface as the application, introducing first-time users to the product.
/via Jorge Salinas
OSX Lion - Lets you number your files naturally and shows them in numeric order.
Previously you needed to number them with an appropriate number of preceding zeroes like f.e.: screen 01, screen 02, screen 03.
/via Matt
Google+ - Uses your gender in translations. If you are a female Spanish speaker, the sentences are written in the feminine form.
/via Lucia Soto
Facebook - When using an external chat application all chat notifications are turned off.
/via Joshua Kehn


