I have a domain that is getting at least 100 unique hits per day.
I have google adsense on there right now and generates about $1 per day.

how can I maximize my earnings?
what else can I do?

thanks

put some compelling and interesting content on the site, update it regularly, and develop some good link trades to start increasing traffic. as your inbound traffic increases so should your revenue.

the more you put into the site the more you will get out!