I'm Mark Nelson, based in Newcastle upon Tyne and am a web developer by day. I've been slowly filling in some of the gaps in Newcastle, mostly in the east of the city and some of the cycle routes in the area since discovering OpenStreetMap last year.
I'm currently using a Locosys GT-31 to collect data by bike and foot and am slowly teaching myself how to add and tag it all correctly in the database.
My largest contribution so far was at the Sunderland Mapping Party in May 2009.
You can find out more about me at www.sphericalsquare.net