For traffic increase I can recommend this site called "ebesucher dot com". It's a community of website owners. If you want to use their service you have to install an addon to your browser which shows you all the websites of the community for 15 sec. In this way you gather points. These points again let your website appear in the browser of other community members. I tried it once and had a significant increase of traffic. But I don't know if you get a real benefit from it.