Okay, I'm going to post this tonight, and then again tomorrow, so forgive me if you see it twice. But it's very simple.
Tomorrow is Valentine's Day (a silly holiday but one I personally like, in small doses). If you're so inclined, take 5 minutes out of your day to send a valentine to a writer you like, in the form of an online review (Amazon, B&N, Goodreads, etc - wherever you frequent).
Hell, send two, or three, or a dozen. Writers are happy to share the love. And trust me, they WILL feel the love.
(naturally I'd be thrilled if you did this for one of my titles, but embrace it as you will...)