Yeah they do.
For someone they can't stand, they sure do make sure they tune in every day. DUmmies, Rush thanks you for the extra ratings.
I don't know if they listen to Rush because George Soros pays Media Matters to listen to Rush and then publish out-of-context and dishonest quotes.
They might listen but they don't really need to, unless they are on Soros' payroll. And even then, they could just claim to listen and make crap up. I'm sure nobody in Soros' org would bother to check.