Robert Scoble has posted aseries ofentries comparing the Bloglines Citations feature with for finding out how many sites links to a particular URL. His conclusion seems to be that Technorati sucks compared to Bloglines which has led to an interesting back & forth discussion between him and David Berlind.

I've been frustrated by for quite a while and have been quietly using Bloglines Citations as an alternative when I want to get results from a web search and PubSub for results I want to subscribe to in my favorite RSS reader. Technorati seems to lack the breadth of either service when it comes to finding actual blog posts that link to a site and neither site brings up unrelated crap such as blogrolls in their results.

The only problem with Bloglines is that their server can't handle the load and the citations feature is typically down several times during the day. Technorati has also had similar problems recently.

At this point all that Technorati seems to have going for it is first mover advantage. Or is there some other reason to use Technorati over competitors like Bloglines or PubSub that I've missed?