I posted the same thought before when someone said something about it...but here is my thought again..
They were probally trying to do 2 things with that.
1. See if people were actually looking at the banner spots...so they put a misspell in it so some one would say somehting and others would be like...yea i noticed that too...mission accomplished.
2. They did it to get more coverage...cause they knew that eventually some one would post something about it and the views of the thread would to up to about 200. Now thats 200 more impressions plus the people that will hit refresh just to see it for them selves...so maybe 1:250 people will click it and signup for the program....
I think its marketing genious...
But im probally just giving them more credit than i should...carry on...
-JOhn