CainIV - 8:50 pm on Jul 8, 2011 (gmt 0)
What they are looking for is HIGH volume LOW quality.
That's the last thing search engines are looking for.
Measure directory strength by age, the number of inbound links and authority, cache date of proposed page and whether they have an option of being listed in exchange for a link.
And editorial quality, how they list your business, etc.
We have run control tests on directories alone - free directories - and have found negative rankings as opposed to positive rankings.
Just my 0.02