Want to run 3 sites, but only 1 will run

Hey y’all, I’m trying to run 3 sites (or virtual hosts) here, but only
one of them will run. Out of site1.ru, site2.ru and site3.ru in
http://pastie.org/335739 only site3.ru seems to make it. When I try to
visit site1.ru and site2.ru, they show up as site3.ru? I’m confused,
but I’m sure it’s just poor config design from my part. Anybody care
to tell me what I’ve done wrong?