Google SearchWiki
Google just added some pretty neat stuff on their search called SearchWiki. If you are signed in with your Google account and perform a basic search you will see some new buttons on each of the results. These allow you to rearrange your results so that next time you search for the same keywords you will be presented with your saved changes.
On with the interesting aspects
You are also able to add a result by submitting the URL. If the page is already indexed by Google, it will immediately display the title and description of your URL. I experimented a little and it seems that the cache used here is different from the usual search index (some pages cannot be found by Google when searching for their exact URL, but they are already cached when adding results to SearchWiki).
Another useful feature is the ability to see what others have added on the search you have just performed.
Conclusion
They claim that your suggestions on SearchWiki will only affect your own searches. Why shouldn’t they expand this to add a certain human side of their ranking algorithm? For example having 1,000 users delete a certain result from their search means that many others might find it useless as well.
