Blogging is a great way to promote your Affiliate program. There are many ways to use a blog for promotion. Simply write about your own experience with GuitarGames.net and provide your affiliate link (Listed in your Affiliate control panel). Or create a mini-lesson and link to GuitarGames.net as a follow-up drill. For example you could write an introduction to reading music and link to GuitarGames.net suggesting that the reader follow up by playing Note Squish.
There is no need to hype. By hype I mean exaggerated claims about our site. Be truthful and informative and interest will follow.
Need to start a blog? Here are some great blogging services.
WordPress.org - Free blog with no strings attached, this is what we use. They provide lots of blog themes to customize. Easy to use but very powerful solution.
Blogger.com - One of the biggest providers of blogs, also has a big community of users which is always helpful. Blogger is also free.
TypePad.com - A very powerful and popular free blogging solution. It has some great community building tools that also work with WordPress and Blogger.