I recently posted a post about this and this is a big issue within the book blogging and publishing world. You probably don't think much of it because it probably hasn't happened to you, but it really is a huge issue.
Illegal Advanced Reader Copies.
People have been selling ARCs on Ebay ILLEGALLY. Want to know what Lauren Destefano thinks?
"Guys, if you see ARCs on eBay, please don't bid on them. It's not a way to support the author at all (in fact, it hurts us); it only helps scalpers who drive up the cost of things that should be free. I saw an ARC of Fever that had a bid of $45, and it sorta breaks my heartstrings a little. There was a very small quantity of Fever ARCs printed up, and many legitimate reviewers weren't able to get one, so to see that an "unread" ARC is being sold tells me that someone out there abused their position in order to turn a profit, and really, that just messes things up for me, my publisher, and other reviewers." -- Lauren Destefano (author of WITHER and FEVER)
Don't do it. It's illegal, rude, and just plain awful. If you're a book blogger and do this, I don't think anyone will be reading your blog ever again.
So respect the ARC and post this button on your blog to let everyone know about people selling illegal ARCs on Ebay. Please, everyone, report ARCs that are being sold illegally on Ebay and all of those other places.