I'm on Goodreads

All my books are on Goodreads.com – it’s the place to go to review or rate them, to read reviews of my books by other people or find out more about my books, join discussion groups or get book suggestions based on what you like to read.

And from time to time I have book giveaways there.

http://www.goodreads.com/author/show/153703.Ian_Irvine