This site is able to stay online with income from a few different sources. First, if you click on a product link and buy the product, it is possible that I get a small percentage of the sale. Even so, domstechblog.com writes unbiased reviews on products. Second, you will noticed ads from Google on the site. These ads are another way this site generates revenue.
I just want to reiterate that I do not skew my opinions on a product just so I can increase sales. I try to only promote products that I truly think are solid products.