The phone is definitely saving recent searches or locations I guess. I don't know if it's been documented but if you visit a bookmark, it takes the usual time to load and identify, drop the pin, all the good stuff (over edge). Then, go to another bookmark, the same thing happens. Go back to bookmark 1 and it will drop that pin on a fully-loaded screen at like warp speed. It must be remembering in a cache or something. Is that new? Never noticed it before.