(by Robert de Heer)
Dismoiou.fr - a mashup produced in France with the will to create a huge common database of Points of Interests. They recently launched an English version as well, called http://tellmewhere.com/ . Although most of the content is mainly French-based, the concept could be quite interesting for other countries as well: if there are enough users to enter their POI's in there, it can become a cross-functional platform for entering, sharing and downloading POI's (e.g. to your TOMTOM Navigation System).
And that's what exactly the purpose is of this site, according to Gilles Barbier, who used to be the CEO of V-trafic.com, a website for actual traffic info in France. For more info on this project, check out his blog on blog.tellmewhere.com.