Thanks for sharing your tips with the community.
Yes, indeed twitter is a very good tool for pr and branding. It is a shame that some companies are still the the caverns era and still overlook the power of communities like twitter.

I have been using the seo for firefox plugin for some time now and... guess what? It works!
By that I mean that there are many tracking plugins around, but many of them have many discrepancies in their results, this one really gives you accurate data and is free.