Trendmetr watches for search terms against Twitter, instead of watching for trends based on what is being published in hashtags and the like.
Three default trends appear on the screen, all of which are editable. You can easily add more meters (yet how to do it took a second to figure out) by clicking the + sign at the top of the page next to the logo. Honestly I at first thought it was part of the logo and couldn’t find it.
The trends, much like visualizer bars, go up and down with each refresh and show an approximate decibel value and number of mentions. You can click to search against Twitter or Twoquick (Google and Twitter search service from the same makers) for more information on the trend.
A quick tool with a clean and easy to understand result.