People who post daily there are comparable to those who post daily at this site.
I'm sure Hannity has had 70,000 members over the years but not even a fraction of those have posted for more than a day.
It's easy enough to see posting percentages.
USMB: 1,678,208 posts, 12,080 members
Hannity: 4,322,281 posts, 73,370 members (Until recently, this was over 8 million posts from over 120,000 members, until some idiot there decided they could stop their "lag" by deleting thousands of accounts and millions of posts from the db.)
Again, the point was assuming folks "from Hannity" such as myself, Dude or Art would automatically know anyone else from there who came here is kind of like assuming I know everyone in Dallas just because I lived there for two years.