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Here's an excellent example of customer reviews and recommendations in action in a B2B site. TradeKing is an online broker dealer offering the ability to conduct flat-fee trading online. It also features a number of community features to connect like-minded traders, who share strategies and information. Some have created profiles and therefore can introduce themselves to other members who have similar financial interests. Others blog about their strategies and trades, and some are actually publishing their trades using a Certified Trades section. The Certified Trades feature verifies that each published trade has actually occurred and then makes the details publicly, transparently available to site members.

At the time of writing, TradeKing said of their website, "As the market has experienced increased volatility in recent days, our community has demonstrated an even higher level of activity, indicating perhaps an added comfort-factor social networking provides during times of fluctuation".

Widgipedia is a search engine and directory for what appears to be every widget under the sun. (A widget is a small application that runs on your desktop or in a Web page.) You can find widgets in a number of different ways. Tools include the ability to use a traditional search field, or choose a tag/keyword from the keyword cloud posted at the top of the site, or review the widget gallery or choose the directory that features your chosen widget platform (desktop for Mac or PC, Web-based or mobile).

A brief cruise through the site revealed widgets designed for an astounding number of reasons, all of which must be essential to someone out there. There are widgets to insert into a blog that allow visitors to rate the blog or add the blog to their Bloglines account. There are widgets that allow you to see Tennessee traffic live on your iPhone. There are widgets that will show you the top 30 search terms for various search engines and metacrawlers over the past 48 hours. There are also many ways to become part of this widget community, especially if you are a widget creator. For example, you can upload the widgets you've designed, review and analyze the code of other widget makers and much more.