What does welcome to the no spin zone mean?

[Olivia]

Well i made a fan acount on twitter for sharan corr from the corrs and i asked jim to follow me... so he did and i said thanks so much for the follow and he said "Welcome to the no spin zone" what does that mean? :L lol

[the bottom line]

I think it's taken from Bill O'Reilly's show. But basically it's a politically conservative term that means they're telling you the truth and not putting a "spin" on it, which means making it more politically correct