Trendistic
A great way to follow the trends on Twitter is Trendistic. You can see what the hot topics of the day by rank, peak times, and duration of the hot topics.
You can see the top 20 topics of 2009:
1.Michael Jackson
2. Kanye
3. Oscars
4. Balloon
5. Demi Lavato
...and so on
The top trending topics right at the moment I am writing this:
1.plane
2. Austin
3. building
4. crash
5 newcussword
And you can search for terms or words you are interested in to find out what the trends are for those topics!
On processing, please waiting for ...