My preferences indicate that I joined on 14 February 2007. I'm not constantly active. On the total of 6,873,307 pages existing in the English Wikipedia I've dared to make 120 changes (as of September 2009; further info under contributions). If you want to see the pages I created follow the (external) link. The image tells people with some knowledge of the Turkish language what my main occupation during spare time is.
One reason for the large number of pages in the English Wikipedia may be the fact that anyone without a sound knowledge of the subject may create pages under any odd subject. Some of the pages in my area of expertise that should either not exist or need a thorough re-writing (possibly redirect) are: