TwittLink shows the link distribution for the most tweeted links across Twitter. The main area shows the distribution of the hottest link in an hour by hour breakdown with emerging links on the right side. it is basically a memetracker is a great interface.
This a great way to see new trends being shared across Twitter. Theor own about section has a great summary:
How to use it?
If you want to see which news are the most discussed on Twitter in the last 24 hours, you should look under ‘Hottest Twitter Links Today’ section. If you are a journalist or a blogger and you are looking for fresh news, then you should check hourly the ‘Emergent Links’. If a topic has the potential to become viral, it will be marked with a ‘hot’ sticker.
So are you sharing the hoteest links or even starting a trend? I wish they could pull that semantic information out also and show who is starting the link trends. From any link you can open the statistics or send the link as a tweet yourself to join the meme.