The wonders of GreaseMonkey (22 Mar 2005)
You can see a list of GreaseMonkey scripts, but as a demo have a look at the one I cooked up below. It adds result numbers to Google search results and you can then select that result with a single keypress (press '1' for the first result etc).
Type-ahead-find often goes pretty badly on search results because (you would hope) many of the results have all the same keywords in them.
(If you have GreaseMonkey installed, you can install this script by following this link and selecting "Install User Script" from the Tools menu.)