The Amazon affiliate program is worth signing up for but it doesn't pay a whole lot unless you really focus on books in your blog. Actually, it's strange but some months I sell several books off of my sites and then other months - zilch...

But the affiliate program has been really beefed up by Amazon in terms of the tools they offer. Firstly, you can build your own branded store - it's called aStore - and then link to it from your site. What's neat is that the store you create has all of the Amazon features so even if you only list certain books there, once in your store, the buyer is offered lots of other ways to find books that they may buy.

Next, Amazon has added some new widgets. Although a tad slow to load they are pretty neat. Check this one out (below) for example. You'll find tons of different widgets to use in all sizes and shapes.

Altogether it's a good program for making an extra buck or two periodically from your site.