I sure hope there will be some change in POI search functionality in the upcoming
iGuidance 2009. If I recall correctly there were around 6 million POI's in
iGuidance 4, but depending on how you needed to search for them, you may be out of luck.
iNav does mention some feature related to POI searches will be added (or modified?) in
iGuidance 2009. I don't have the current Beta 1, but I may have the upcoming Beta 2. If iNav permits me to write about the not-yet-released software, I surely will look at all details.