Well, I use several tools as an experienced Linux user.
a Google Custom Search on my iGoogle page is the main one.
Bottom line is I never trust 1 source for an definitive answer.
Unless it's Kendall, tdockery97, oscar799, vralak, richyrich, viking777, or Aging Technogeek coughing up the advice.
Microsoft Windows assumes I am not smart.
Linux demands that I prove it.