Often I end up doing searches on a specfic site using google alot. For instance, the api for rubyonrails documentation.
Instead of using my previous tip *each* time http://www.bigbold.com/snippets/posts/show/1325 :
I made a keyword bookmark inside firefox.
Basically, create a new bookmark in firefox and make the url
Give this a short name like api or ror
then in your search bar you can type
api submit_tag and watch the results float in.
Other useful searches i've found are,
the Ruby on Rails mailling list:
The PostgreSQL 8.1 Documentation: