having google bring back EMD's has been the real winner for directories IMO
they really stuffed up, but i think they did have to scare many people back into a content based internet and not " passive parking"
i now "park" , but only because of auda rules, i think its a dud rule, unlike others i'm also lazy at doing it mostly because i try to use my domains for " development experiments" and i am serious about that term, you need research and development in every business, you also need to FAIL to gain the knowledge to move to the best solution.
i don't think this is off track on the discussion, if you have a GOOD directory based domain then my opinion is DO NOT use it unless you are experienced.
get another domain, hand reg TOWNdentists.com.au and create it, and knock the cold doors, knock the DEAD doors, get as many NO's as possible and learn from it, "burn and learn" and best to BURN doors that you don't care about, burn some other vertical and not yours, burn a different town LOL but not yours, and this way at the end of the day you don't feel bad.
THEN create your directory site with that HERO domain you have and you have all the answers.
and ALWAYS remember " maybe is a NO " , "do you want to advertise" ......... " maybe, ring me next week" , well that's a NO
spacey, i feel an ebook coming on LOL
tim