For this kind issues, you can use Google Analytics. May be you already know it, but I just want to say.
To the two users above with the 100+ hits from directories. Did you manually go to each directory and submit your site or did you use a mass submit software?
These days i get approx 300-400 visitors via social networking and social bookmarking, i am doing only or only social networking and social bookmarking work and i get approx 400 visitors or more per day. My aim is approx 2000 to 5000 visitors per day. I will do other search engine activity then i will reach my aim.
I am getting about 400 members but not consistently everyday but have got about 400 in one day. My members to my forum are increasing everyday.
Google analytics is used to find the traffic to your website. The traffic varies for each website. Usually it is around 100 per day. Submitting to a web directory is a very effective technique in SEO.
Its not only how many links you submit , where you submit your directory, directories list will give you more daily traffic. You need to ask for the quality visitors not the quantity . One more point its your directory PR . Ranking and the links you keep Hope it will help.