Rombod

Oh, sorry, I thought you meant ~2 weeks and were unsure of how many it was! It's a bizarre scenario. Yeah, a lot of songs have massive debuts in the US then plummet. I know the same thing happens in the UK, but it's less extreme because the airplay isn't considered whereas in the US songs are put on itunes before they really have any traction on radio so they freefall after their fan-boosted debut. Also like you said, Bad Romance was number one for aaages on US itunes but Empire State of Mind and Ke$ha held it off on the BB chart because of massive airplay (ESoM particularly was played every second song practically on NY radio, apparently). Much prefer our method!

What's My Name actually went to number one before Only Girl in the US, I think. It was a record.