I missed the first one but BlogTalk returns:
BlogTalk 2.0 is designed to initiate a dialog between bloggers, developers, researchers and others who share, enjoy and analyse the benefits of blogging. The focus is on weblogs as an expression of a culture based on the exchange of information, ideas and knowledge. In the spirit of the free exchange of opinions, links and thoughts we wish to engage a wide range of participants from the blogosphere in this discourse.
They are calling for papers. Submission deadline is the 03/17/2004. The conference is supposed to take place beginning of July 2004 in Vienna, Austria.