Ooops confusing user interfxce. And no phones on on stage with radiomikes.
He appears to be finding the keyboard a confusing user interface too. :-)
More seriously, he seemed to be using Tweetie to post (then identica, now the Web interface). So perhaps he wasn't really commenting on Twitter's user interface, as the article implies, but Tweetie's (which is great for experienced users but could suffer from the "too simple" effect for others). Despite trying many clients, I've always gone back to the Web one too..
This is ridiculous. TimBL has been using identi.ca instead of Twitter for a long time because he supports free network services. No mention of that in the article.
Nevertheless I do no see why the fuss. Yes, it is the inventor of the WWW but people is seeing this like "the blessing" of Bernes-Lee to the now-omnipower twitter. I think is not, it is just another user that has been catch for the wave.
Actually, he uses decentralized identi.ca which mirrors his dents to twitter, this is the original identi.ca account he actually uses: http://identi.ca/timbl