Semantic tools that make sense

Firefox plugins to summarize web pages and Google searches on the fly:

http://www.semanticengines.com/plugins.htm

SenseBot for Search Results Page adds SenseBot capabilities to your Google searches. After you add the extension to your browser, it becomes seamlessly integrated with Google results page. When you do a search on Google, a cloud of key concepts appears on top of search results. You can click on a concept to do a subsequent search, focussing on the concept. You can also click the "Show text" button, and a text summary of content of the search results will be generated and displayed on the same page.
Note that summarizing multiple pages as a whole makes more sense for informational queries, i.e. those where you are trying to understand a concept or get an overview of a topic.

• SenseBot Summarizer is an experimental plug-in that generates a text summary of the Web page you are viewing. After you add the extension to your browser, a menu item called "SenseBot" is added to the browser Tools menu. Also, when you right-click on any page, "SenseBot" appears as one of the actions. When you select the action, a popup window is opened containing a text summary of the current page, generated by SenseBot.
Note that there should be a sufficient amount of text accessible from the page in order to generate a summary. Sometimes even pages that look like they are full of content do not fit this requirement (e.g., Yahoo.com). In this case the summarizer will inform you that the text is too short to summarize.

• LinkSensor semantically analyzes blog posts on-the-fly and highlights key concepts in the text. When your mouse is over a highlighted word, a small balloon shows up suggesting other articles from the blog related to the word. After you add the extension to your browser, a menu item called "LinkSensor" is added to the browser Tools menu, and is also available in the mouse right-click menu.
If you are a blogger or a publisher, you can get LinkSensor setup for your blog.