Fire eagle came out a while ago and I thought it was a great idea.  To be able to have one application update your location and all other location aware applications benefit from that.  Unfortunately there were/are no good location posting apps for Windows mobile, like loopt.  There are a few, Navizon does.  And I really wish BrightKite did.  They missed the boat.  Now comes Google Latitude.  It have a very big name behind it....Google.  Who doesn't know Google?  And it is built into Google Maps.  Sweet.  Except one small problem I am having.  It doesn't let me log in.  Says I need a data connection, which I have and it is connected.  So minor hicup so far.  But this could be the great location app for Windows Mobile.  Even better would be if it updated fire eagle, but I'm not holding my breath.