>However, sites are just now starting to phase out IE6 support.
All this proves is that the IE6 monoculture had such an effect that it took a long time for the effects to disappear. But yes IE4 and particularly IE5.x introduced a lot of new stuff that did not become well known until years later, like the infamous XMLHTTPRequest.
All this proves is that the IE6 monoculture had such an effect that it took a long time for the effects to disappear. But yes IE4 and particularly IE5.x introduced a lot of new stuff that did not become well known until years later, like the infamous XMLHTTPRequest.