What marketing tool is effeictive?

My favorite marketing tool is Squidoo. You can make a Squidoo page (lens) about anything at all and send traffic to your other website, blog, etc. If you have a blog about health, make a Squidoo lens about health using material from your blog plus other great material, throw in an amazon module with books that support your topic, find some Youtube videos that demonstrate some of your points, and a blog feed from your own blog so that the page will be regularly updated, automatically, as you post on your blog, and there you have a great marketing tool. It works, I know. I've done it.