"Mapchester will generate a new kind map of Manchester - produced by collective, community effort that will be completely copyright-free."Aside from creating license free data from this project, Mapchester is also driven by the initiative to get people to participate in their local geography and empower them to take an active role in their 'places'.
This event will be held Saturday 13th and Sunday the 14th of May (This weekend!). Mapchester HQ is on the Lower Ground Floor, 117-119 Portland Street, Manchester M1 6ED, see http://manchesterdda.com/article/12/ or this Google Map
(The space has been generously provided by the Manchester Digital Development Agency and they are also helping in signing people up to take part.)
Here is a link to the online invite.