• TweetMeem – Allows you to track and search memes in a useful threaded style. It will also show you exactly how many Twitterers are passing around the meme as well.



• TwitScoop – In the form of a tag cloud, TwitScoop shows “what’s hot right now” and the latest hot trends can be found on the “Hot Trends” list. You can also browse the list of discussions by hovering over an item.



• Twitter(url)y – This is another TwitterMeme type tool that tracks Tiwtter memes in a Digg style manor where Tweets are to the memes, what Diggs are to Digg stories.



• SiteVolume – This is another handy tool that also pulls data from other social sites as well. Using the Goolge “site:” search operator, SiteVolume pulls data for Digg, MySpace, YouTube, Flickr, and Twitter to compare up to five terms.

There are plenty of lists of Twitter tools but I wanted to point out a few specifically that could be used to track trends and discussions across the web. Although the tools are Twitter based, there are a lot of Twitter users talking about a lot of different things making it a good place to look for trends. Using the the tools you can find trends that are hot, or that may become hot in the future.