When I link to Amazon (for example, when writing about books), I do it with an Amazon Associates link. Amazon Associates is an affiliate program: when you follow my link, I get a small percentage of the money you spend at Amazon. Your price remains the same, so it's a win-win situation for both of us.
I'm not going to get rich off of it (I've earned a grand total of $25.31 in the two years I've been a member), but money is money, am I right? I've added an Amazon link to the sidebar on the left. If you want to toss a few pennies my way, the next time you are heading to Amazon, use my Amazon link. Thanks!