Although you didn't mention how many words were in your phrase- I'm going to comment about two word phrases in particular, and general phrases in general.
I'm a bit wary of some those Overture figures that show high amounts of traffic, especially in regard to the Two Word Phrases. This is based on researching the actual number of times these two word phrases are queried in Google- figures I obtained using Adwords.
I suspect that there's a certain amount of matching with other "third words" that gets aggregated into the figures for two word phrases- thus inflating their real numbers.
I am not totally convinced about the usefulness of two word queries- or any of the broader keyword phrases as far as selling stuff is concerned-
Additionally, AskJeeve's traffic numbers are very small when compared with G or Y or MSN. If you're getting 3 percent overall traffic from them, then that's about right. In fact, the amount of unique visitors to AskJeeves for the second quarter of 2003 declined by over a million visitors compared with the first quarter of 2003. (I've posted a link to where you can verify those figures elsewhere- sorry I don't have time to go look for them right now- :) )
Lastly, Ask Jeeves demographics, as I understand them, tend to run toward the home user- so if you're selling software or have a business related website, then your traffic from them won't be as great.
That's my understanding.
[edited by: martinibuster at 9:28 pm (utc) on Aug. 13, 2003]