I don't pay any more particular attention to LGBTQ covers than I do for covers of other books. I don't necessarily need a cover of an LGBTQ book to shout out, "This is an LGBTQ book!" I don't think it's particularly necessary for the cover - or title, for that matter - to differentiate from other books by saying it's an LGBTQ novel (unless people are specifically looking for LGBTQ novels, in which case... I don't know.).
Of the LGBTQ novels I've read, here are my favourite covers - because they're all eye-catching! (Golden Boy is published as an adult book, but it's about a teenager, so I consider it cross over, and I'm including it.)
The Miseducation of Cameron Post by Emily M. Danforth
Ash by Malinda Lo
Quicksilver by R. J. Anderson
Every Day by David Levithan
Far From You by Tess Sharpe
Golden Boy by Abigail Tarttelin
The Summer I Wasn't Me by Jessica Verdi
Two Boys Kissing by David Levithan
I know this last book doesn't fit in with what I said at the beginning about it not being necessary for LGBTQ novels to have a cover or title that says it's an LGBTQ novel, but for Two Boys Kissing, it's important. It's making a statement, or rather the story is about two gay teens making a statement, and it's important that the cover - especially with the title it has - reflects that. I think it's bold and brave, and highly important. I'm not sure we would have seen a cover or title like this perhaps even ten years ago. It shows how far we've come, and I love that! :)
I think I've shown enough covers for one post, but I'm not particularly keen on the new UK covers for David Levithan's novels from Egmont. They're not the kind of covers that would have me picking up a book, LGBTQ or not. I think they're a little on the plain side. Not that eye-catching, except for the colours. I think you should be able to say more about a cover than that the background colour is bold.
How about you? What are your favourite covers?
In July 2013, I held LGBTQ YA Month. Check it out.