Copyblogger has copywriting tips for blog, email, and RSS marketing.
I have added Copyblogger to my blogroll, that is blogs I like a lot and follow. The easiest way to explain why is to take a piece from the About page:
Content drives the Internet, and the quality of your writing will determine not only how well your site converts visitors into sales, but also how well you rank in search engines and how many links you get.
Now that blogging has become the smartest strategy for growing an authoritative web site, it’s your copywriting skills that will set you apart and help you succeed.

