Please Help us monetarise Online-Stopwatch.com

Alright guys,
We are trying to get some money together for a new project….

www.online-stopwatch.com is currently getting:
6000-7000 unique visitors every day, about 10,000 page views.
So about 167,392 page loads a month.

You can see the google ads on the site, and that is bringing us around $100 a month — which is usally fine, as the site wasnt made to make money, it’s just we really need it for this new project.

The site is a PR4, and 80% of the visitors are USA, then 10% UK, then the rest is odds and ends.

What advice can anyone say to help us make it earn more? Or is this amount about right for the visitors/etc.
Thanks for the advice.
Cheers.

Original post by itsall3