I have several: Oh, The Places You'll Go. Niche is IT Governance and IT Management Cheap Keywords. Niche of advertising - real objective it to see how low I can make the Alexa rank. Practices I use on other sites.
My partners 2 main sites (she is an International Marketing Expert, 25 years field experience) I work on but don't run Get International Clients. Niche is to help mid-sized business owners create international business development strategies that shorten time to profitability. Mainly people targeting a country or region that they don't know. US English sites are not appropriate in most other countries. We have started getting calls for this consulting site from people that found us on Google. We do not run advertisements yet, but have just created the icons that we will be using.
Both GIC and CK.biz are listed in the AdAge Power 150 top Sales and Marketing blogs, 315 and 386 respectively.
I have broken the AdAge list out for European sites and in EMEA the sites are 68 and 79 respectively. The lists move on a regular basis and our Alexa ranks are lower than they were before so our sites are probably about 60 and 70 in Europe.