IEBlog : Must Have Add-Ons for IE7 - Mozilla Firefox

Here's some coverage from the Microsoft team talking about all the recommended add-ons. Quote: "Trailfire, provides a truly unique new method of web navigation. By leaving "Trailmarks", which are essentially electronic notes, on individual web pages, users can lead their Trailfire contacts on an interpretive trail for the web. These three add-ons give IE7 users entirely new ways to experience the Internet."