Keywurl is awesome!
I use it dozens of times of day with Safari 3.1.2 and OS X 10.5.4. (Couldn't get Sogudi to work well with my set-up.) Btw, my all-time Safari add-on, SafariStand, does keywords too, but I like Keywurl's interface better.)
Setting it up is so simple and easy because of the great interface.
Here are some fave searchess -- you can, of course, give your own keywords. For example, I use wk for Wikipedia searches.
(Where you see "Query" below, is where Keywurl puts in its Query lozenge (it seems to automatically put in the commas where needed before and after the Query lozenge, because when you look at the expansion in Keywurl you don't see commas, but when I copied and pasted here, the commas where correctly inserted.)
Anyway, Keywurl is awesome, and this might help you get started:
Google Image Search:
Internet Movie Database (IMDB)
Of course, you can also use Keywurl to just open any website you want with a keyword -- for example, I type gn to open Google News. To add other searches, go the site your interested in, do a search there, and then copy the url into Keywurl, replacing your search keyword with one or more of Keywurl/s Search lozenges,as needed. With a little luck and experimentation, you can set up searchs at almost any web site.
(You can use these Searches in SafariStand too, but there, as I recall, SafariStand uses @key& for its keyword Search field, not a graphic lozenge like Keywurl does.)