First of all, thanks for linking to my blog. Second of all it's amazing they've made so much money from Twitter given their apparent lack of interest in customer interaction (which is the bit most of our clients are most keen on!). If I get some spare time before Christmas I'll see if I can find out how much the companies that ARE using Twitter to engage with customers are making. A 'compare and contrast' exercise could be quite interesting …

Cheers

Emily