Clipmark

How to turn Gmail into a massive personal database (Gmail + the Google Toolbar)
How to get real-time news updates in Gmail (Gmail+ Google Talk + Twitter)
How to automatically store your bookmarks in Gmail (Gmail + del.icio.us + Yahoo Alerts)
How to manage Calendar and To-Dos in Gmail (Gmail + Backpack + GCal + GTalk + iMified)
How to blog from Gmail (Gmail + Wordpress/TypePad/Blogger + IMified)