Am i the only one who thinks RCA's approach to We r who we r was very smart ?
They sent the song to the radio first, not releasing it to itunes just yet, which increased the songs demand.
Then a few days later, they released it to itunes at the perfect time, which caused a huge front-load in sales which allowed the song to debut at #1
That's how UK releases work too.
They premire the song and music video and then 3246327683 months later the song is released with huge frontloaded sales and then drops down the charts as fast as a rocket