I had said some time back that I would launch a monthly newsletter on book marketing when I got to 100 subscribers. I've reached that point, and will publish the first issue on or about July 25, and monthly thereafter.
This will be a mix of reader tips and tips from me (in putting together Grassroots Marketing for Authors and Publishers, needless to say I collected quite a few), generally one brief article each month.
You can subscribe to any of my newsletters at http://www.frugalfun.com/subscribetips.html
The newsletter will be posted on my blog (and I might post them here as well), with a brief e-mail note giving the link.