How to increase AS income?

My website is ranked #1 or #2 on Yahoo, Google and MSN. Not much room for improvement. To increase my AS earnings, I would have to:
1. Add more pages
2. Build more websites

Any other suggestions?

 

Try and increase the clickthrough ratio by adjusting the layout and monitoring it.

 

Yes, use what you have first. Play around with colours and sizes and monitor its effects on revenue.

 

Do you mean switching colors like DP?

 

everyone

 

No, I meant your ads lay-out.

 

Ad more content, buddy. Content.

 

How about widening your marketing efforts to more than just search engines? Most of my popular sites get a minority of their traffic through search engines. There are a ton of ways you can promote your site aside from search engines, as well as doing things to make your site more 'sticky' so people will want to come back regularly.

 

What's your website?

 

SEO and adsense websites are doing well.

 

Any topics related to money(loan, mortgage, credit cards) should do well with Adsense.

 

If your not ranking #1 for your highest traffic term in your market, target that term.