By Rachel Tiplady
On Feb. 13, thousands of young people will pour onto the streets of Paris, Milan, and Barcelona. But they won't be protesting -- they'll be looking for love. The Valentine's Eve street parties, dubbed "St. Single's Day," are sponsored by Paris-based Meetic.com, Europe's leading Web matchmaker. The festivities will include DJs and speed-dating stands, where singles have only a few minutes to chat up a potential partner.