Dada Be Rusting Tipi

Here is a figure-ground drawing of Berlin. Next to it are the figures, arranged alphabetically, as made by Armelle Caron. Here are some alphabets. Can you make a city?

Am thinking about devising a map-based survey of derelict places, and am looking for ways for respondents to add points of their own to a web-based map. So I need a survey tool, and a mapping tool. Have looked at Twtpoll as the possible survey tool. Seems friendly enough. But am wondering if I can get Google Docs to do a map-based survey. On my way through the various sites…