I have added the concept of "Clean click throughs" to the site. What this means is each listed business on the site gets 5 clean click throughs, the 6th person to click through to the business in question is presented with a brief popup suggesting that that particular business should perhaps become a supporter of Bitcoin Counsel. Then the counter is reset and another 5 clean click throughs are allowed.
This shouldn't annoy the people clicking through cause it wont happen too often, and its easy to just click continue. But hopefully also offer a little incentive for businesses to throw a few bitcents (0.1btc a month) to Bitcoin Counsel so I can hopefully employ some more counsel members.
Not for profit businesses / sites are exempt from popups, although they can still become supporters and get a cool gold star