Like it or loath it? I’m the latter right now.
Apparently Cuil was not quite ready for launch during the first day or two – many medium long tail queries did not return results at all, and even general queries returned way fewer results than they should have considering Cuil’s claims of having indexed so many pages already. They did improve somewhat afterward, however, and seem to be picking up more results and increasing relevance as more people have been testing out the engine.
In the long run, I hope they get things together and perform well enough to compete with the major search engines and then maybe do some advertising. I would like to see more serious competitors to Google in order to hold their power in check and encourage more transparency overall.