Thomas Crampton has interviewed Niklas Zennström in conjunction with Niklas leaving the post as Skype CEO. [via: SIME 2007 Blog] An interesting read. Niklas touches upon Skype's market share (growing), monetization and Joost. I'm less bullish than Niklas on Joost (Joost hasn't given me the wow experience, yet, and I don't see Joost being competitive with piracy for the next 1-2 years), but agree with him that there are a lot of opportunity for innovation in e-mail. I think e-mail innovation is a more interesting area for technology entrepreneurs than search.
Related: Janus Friis' blog post (not) just another monday.