Beside the slick look and tabbed browsing, two of the best features I like about IE 7 is its RSS feeds handling and website thumbnails.
The clean and well organized RSS aggregator is much better from usability prospect than anything I've tried before. Import your OPML's and try it out for yourself.
The website thumbnail view tells you all about what websites are open, a live version of print preview.
and yes, its ironic to have www.ie7.com pointing to FF and Clipboard exploit (Retrieve Clipboard Text To A Web Page With Javascript) still there.
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