I've just signed up for this newsletter and liked the first few issues SO much I thought I'd post a link for you as well...
Copywriting Tips & Strategies - comes every week with great tips and inspiration on important copywriting issues such as finding and writing in your own style, ensuring your copy is believable - not too much hype!, what prospects are just *waiting* to hear you say [to help them make the choice to buy your services], and how to market to your target audience through your copy/content, etc.