La fine di un'epoca

(AP Photo/Lionel Cironneau)

In this Nov. 11, 1989 file photo, East German border guards are seen through a gap in the Berlin wall after demonstrators pulled down a segment of the wall at Brandenburg gate, Berlin. The Berlin Wall is gone, but people can still tag their memories upon it online. The Berlin Twitter Wall, which went online Tuesday, Oct. 20, 2009 encourages people to share their memories of the wall’s collapse and hopes for the future on a scrolling wall using Twitter, the social networking site.