Global warming fallacies

Found this interesting and revealing graphic on the placement of temperature stations around the globe. [click to enlarge] It is readily apparent that the majority of new stations in the last 50 years have all been near the equator. I'd be willing to bet that if you graphed these placements the resulting figure would look like a hockey stick. Anyways, one thing is for sure: if these additional sites are being included in the global average, that average would only appear to increase. In fact, any progressive comparison would be invalidate by the inclusion of these additional sites.