I buy most of my books through Amazon, Barnes & Noble, or Borders. I do have an ebookwise ebook reader, but I don't have a lot of books on it. I actually do enjoy using it and it's handy to take with me when I'm on the bus or waiting somewhere.
But, even though I do support the ebook market and think it will grow more and more, I find that I don't buy as many ebooks as I do print books. I do have the Gena Showalter books on my ebookwise and I have several Beth Williamson books on it also (I'd like to now buy those in print). And, I use the ebook reader for erotic novellas from Samhain, Loose Id, or Ellora's Cave.
I was really impressed by some articles I read last year on eliminating excess paper and streamlining your library and it really motivated me to buy/use the ebook reader. However, as time has gone on, I find myself still buying lots of print books. I suppose I'll never not buy print books (unless by some quirk of the future they don't exist anymore). But, I'm a little sad that I don't buy more ebooks considering that I have this e-reader and am not using it so much anymore.
I'm curious for those who read a lot of romance books and who own an e-reader if they buy more books in digital format or in print.