Trendistic, from Flaptor, looks good and works better. See the trend over 24 hours, 7 days, 30 days and more. Tweet your chart or even embed it. it is all there. You log in via oAuth to interact, if you wish, or just use it anonymously.
It is a tool that allows you to track trends on Twitter, similarly to what Google Trends does for Google searches. It gathers tweets as they are posted, filters redundant ones and compiles the rest into one-hour intervals.
You can enter a single phrase, or separate multiple with commas and see colored graphs on the trends. Below that you get columns based on search terms with current tweets themselves. Hot topics for the week can be browsed on the right and wikipedia information is brought in on the topic when available.