Video Chat with up to 20 people for free. TokBox requires no download, only an internet connection and a webcam. Sign up is free and takes just seconds.
This page displays the number of entries (articles) in PubMed (Medline) published every year, that conform to search strategy (such as a phrase) you enter.
Google has rolled out a subtle change to Google Reader that lets you create custom feeds to track pages that don’t already have them. You can subscribe to updates for any webpage simply by typing the URL into the “Add a subscription” text box.
This site provides a simple bookmarking service. We follow your twitter feed, and whenever one of your tweets contains URLs, we add them to your delicious.com bookmarks. Optionally, bookmark URLs in @replies to you. We'll even add a delicious tag identifying the sender if you like.