> I was thinking that this could be useful
> information in trying to estimate the size
> of a particular target market you'd like to
> reach....

> For example, if you'd like to reach people
> who love Great Danes (a breed of dog), you
> might be able to estimate the potential size
> of this market by the sales of mainstream
> books about Great Danes.

Dien,

Amazon.com has ranking numbers that tell you how well particular books sell at Amazon in comparison with all their other books. This doesn't give you absolute numbers, but if you consistently see numbers like 600,000, that's bad news.

Also, SRDS gives you very precise circulation figures for magazines, in some cases even audited figures. This can be extremely useful for such research.

Good luck,
Marcia Yudkin


Affiliate program for high-quality, high-priced special reports