Permanent listing means life time listing here is is lot of example that once directory is listed after some time they remove the directory...
most of directory which i have seen without ads high rank directory are also not contain the ads
Best Of Luck you can do it easly
You looking for good directory . good directory means which approved your site and which PR is good and more search able I think these directories...
You may see on following site http://www.directorycritic.com/
Its totally depend upon PR of the back link if you have more than 25 back link of PR5+ you find difference in search engine .so back link is more...
These are good directory for webmaster .. http://www.webmasterlead.com/(PR7) http://www.webmasters-cavern.com/dir/(PR5)...
marvelous template page ! nice layout and good idea about separated into two categories .search option is very fine
yes, search engine friendly URLs are more efficient than parameter URLs now a days Google Algos are more friendly for URLs which is search...
PR prediction is not a simple work . tool used for PR prediction are useful a moment but not forever. it totally depend on Google algorithms.
Nice directory with well customized and background .new thing used by you ad share revenue .
Nice blog created bye you . link given on your page is well customized manner You should also used Google adsense on top of page . your blog...
There is lot of directory submission services if you got more link on your site its normal there is nothing wrong . You must review these link...
You may also see the following directory http://www.ezilon.com/ http://www.eurofind.biz
It is true that most of directories inner page page rank is less than top page of directory . After approval of site your site is list on that...
Separate names with a comma.