A frequent strategy I use this days is to leverage several social web sources to search for specific subjects.
I then use RSS and Google Reader to consolidate the results into a single view
For example, this week I am working with Microsofts “Hyper-V” virtualisation technology.
which produces a search-results RSS feed:
Then I go with Twitter:
Another good one to add would be social bookmark sites such as http://delicio.us
So in Google Reader, I created a folder called “Hyper-V” and added all three feeds:
The result is a very neat consolidated list of posts, dynamically updating all the time, based on the search term.