snufer this is so cool! I don't know if you have followed the news about Twitter widgets: they are discontinuing support for all the old widgets (the ones made through the configuration panel under Settings) as of sometime in July; they've made the new system for creating widgets at publish.twitter.com really easy to use, but here's the bad news: no more hashtag widgets. Argh!
Anyway, I've updated all my Twitter4Canvas step by step stuff and examples here:
Twitter4Canvas Home
I'm so frustrated about the demise of the hashtag widgets; apparently there are some WordPress plug-ins that will continue to work (although I'm not sure about that since the reason Twitter is discontinuing the hashtag widgets has to do with their support for the dynamic search that made the hashtag widgets possible).
But it is what it is: Twitter accounts, Twitter lists, Moments, etc. still work. I converted my hashtag widgets to Moments just as an experiment back in the spring, so now I am glad that I did!
Anyway, something to be aware of.
I guess the upside is that Twitter has made a real commitment to this new widget system, so hopefully it will keep going strong for at least a few years to come!