From Brussels-based company Attentio comes a new blog search engine and trend-tracking tool called Trendpedia. The service, now out of beta, lets you scan the blogosphere for trends to see what's getting buzz. Trendpedia also lets you compose visualizations of those trends as charts and graphs, which can then be shared on the social web.

To use Trendpedia, you need only enter the keywords or phrases you wish to search for in the boxes provided. Enter one keyword, like "Twitter" for example, and Trendpedia will return a simple chart showing the ups and downs of that word over time, determined by counting the number of blog posts where the word was mentioned.

Enter in two or more keywords, like "Clinton vs. Obama vs. McCain," and the graph will display a comparison of those terms using a different colored line for each. A pie chart will also display showing the percentages of mentions for each term throughout the blogosphere.

Tracking the Political Candidates

Beneath the charts are the blog search results for the items, with each term as a separate tab. The graph