We've been using valgrind bots for a long time on the Chromium project - certainly for much longer than a year. For example, according to the Wayback Machine,

We've been using valgrind bots for a long time on the Chromium project - certainly for much longer than a year. For example, according to the Wayback Machine, our sites page had an entry about it since 2009: http://web.archive.org/web/20091123132855/http://www.chromium.org/developers/how-tos/using-valgrind http://web.archive.org/web/20091123132855/http://www.chromiu...