This is a legit ticket giveaway sponsored by LiveNation (who runs the venue, Jiffy Lube Live). I've worked with them-- and other venues around the greater DC area-- to give away tickets to DC-area concerts.
I understand that this may look like spam-- you're welcome to google "showlist dc" and see that my site is, in fact, legit, and if you click on "daily blog", you'll see the ticket giveaway which is also legit
I'm a local DC-area freelance music critic, and I've had the pleasure of reviewing two of Rush's local shows, in 2010 (for Express) and in 2004 (for the Washington Post). Don't know how else I can "prove" that I'm legit.... but I'm just trying to spread the word about the ticket contest!