Social and Real-time Search
Interesting article on John Battelle's Searchblog describing how Social Networking sites are creeping up on Google as a key source of traffic. I guess Search Engine Marketing will be followed by Social Marketing.
Also, I feel that Search Engines are bound to become more real-time (a good article on the topic). Searching Twitter already gives you a better information on current events. This morning Yahoo mail was down and I searched "Yahoo Mail" on Google - no information on a current issue! I searched on Twitter and found that it was down and the first tweet on the topic was about 1 hour old. So, the issue was not just with my mailbox and I decided to wait.
In my mind, Google should acquire Twitter!