Google yesterday unveiled One-Up (+1) button on search results to indicate your liking of the result. It’s opens up a lot for Google.
1. Google can now improve the search results based on what users like. This can improve google’s aging ranking algorithm and would directly take on new entrants like Blekko who would like to provide user assisted search.
2. Google would now profile users’ liking to understand more about the user . And very soon, you may see that Google improve targeted marketing based on the users behaviour.
3. The most importantly, Google has just now threatened Facebook. Think about it. Once the usage of Profile page increases, Google would start unveiling features that would interate with videos, pictures and its emails. Slowly the Google profile would become a new Facebook. So, IMO, its the Profile Page that Facebook should worry about and not just the One-Up button.