I've been thinking about, and looking forward to this for years. I consider it the digital, indexed equivalent to the writing on public bathroom walls... A sort of spatial bookmarking. This project, based in London, takes it one step closer to reality. Urban Tapestries allows users to author their own virtual annotations of the city, enabling a communityís collective memory to grow organically, allowing ordinary citizens to embed social knowledge in the new wireless landscape of the city. Users will be able to add new locations, location content and the ëthreadsí which link individual locations to local contexts, which are accessed via handheld user devices such as PDAs and mobile phones.