- Search for words only in entry titles or in comments
[intitle:superbowl] – entries that mention “Superbowl” in the title
- Search for only entries that were liked or commented on by specific friends
[like:bret football] – entries about football that Bret has liked
- Search for entries with a minimum number of likes or comments
[comments:5 friendfeed] – entries that mention FriendFeed with at least 5 comments
- Exclude terms from your search
[jobs -steve] – entries about the job market, not the CEO of Apple
You can see more of the advanced search features at their advanced search page.
How will I personally use this? Well, to keep track about what people are saying about me, that is a no-brainer. But to track what people are saying in comments or what they are liking, by keyword, is also useful. So, if you want to see what rustybrick (that is me) is commenting on Google about, you can search for q=&incomment=google&comment=rustybrick and then subscribe to that search via RSS. Clearly, you can figure out better ways to use this for your business or reputation management needs.