my friend there's not any specific way to increase revenue but as per i have experienced with Google it checks for the great content which helps to bring great unique visitors and it also shows the relevant ads so that there would be maximum payouts. so try to concentrate on your content part rather wasting time on any other activity!
The Perfect way to get more visitors to your site is only use adwords and bidveriser. Then upload new content daily... Within few months, you can get thousands of visitors. Even you can use some of the DP members to submit your blog to directories...
Not just traffic, it have quality traffic or traffic don't click your ad. Eg. Search Engine Traffic have quality than traffic from StumbleUpon. My experience StumbleUpon can build a lot of traffic but they don't click ad
Links on yahoo answers words well for me and also getting 3 way links from related sites here on the forums. it is time consuming but at the end it all pays off.