My Directory=400 visitors a day....How should I monetize my directory?

As the title says, I get around 400 visitors a day. How can I turn this into cold hard cash?

 

Put some adsense ads.

For submissions, you will need to achieve high PR

 

I'm keeping away from the adsense game on my directories. I hate seeing adsense ads whe I'm trying to submit my sites to other directories....you know what I'm saying?

 

Then directories dont earn ( even if they have 10k visitors )

There are only 2 ways to earn :

IF traffic - go for PPC, CPM ads.
IF high PR - Go for selling links

 

Find a good affiliate program for url submission and add it to your site.

 

Ahh... That's the kind of the answer I'm looking for. Do you have any suggestions?

 

Real all the possible ways of monetizing a directory here http://www.dirkut.com/ways-to-make-revenue-from-your-web-directory/

 

Payed Submission
Sell some sidewides

Try some afilliate programs that target webmasters

 

Text Link Ads banner?

 

I think affiliate ad is the best if you don't want adsense. I found my earnings much more with clickbank affiliate ads.