Somethings not quite right with the mapping world

Ok. i know where i live. i can find me on Google Maps. it gives me a location, which i typed into FeedMap.net. Feed map tells me in Athlone. which is fairly off from where i actually am (based on GMaps petometer which i taked about eirler on, it says im about 63 miles away from Athlone). So, which is wrong? Google maps? Microsoft MapPoint? the FeedMap guys? Argh!