One thing I'd like to know? Why did Technorati pull their charts in their latest release? Well, they didn't actually remove the service, but there aren't any links to it - at least, that I've seen. One possible reason for this is that their index appears to be slightly temporally challenged. Here is the chart for the term 'today' which you would imagine would be a pretty steady type of trend.
It looks like Technorati's recent memory is ok, but the long term memory isn't what it used to be...
So my guess is that either they removed the charts as they would have exposed this type of problem, or that they were planning on reducing the temporal width of their index for scalability reasons and the charts had to go as a consequence.
While the recent memory is more important for certain aspects of blog search - the long term index is something that can be used more aggresively for things like 'influence' or 'authority' (whatever they are).