Eddi, hit me up on icq.

the problem is is that the 100 blogs per month, must generate 1 sale per month, that doesnt sound much however on a 3 months perspective saying you have
300 blogs, that would result in 300 sales

so imho
i have a blognetwork with around 300 blogs myself,
but with the blogs only 300 sales per month is clearly not possible

Hi Oil, thanks for the feedback.

Its strange that your blogs dont make more sales. I have noticed
that all of your blogs (from your sig) are on a subdirectory. which is certainly not good because penalized by google. maybe thats one of the reasons why you dont do better on your blogs.

In the last 2 weeks i made aprox 80 blogs and i have noticed that almost all of them show up on serp page 1-3 for the respective keyword. (google needs 1 week until new blogs are being indexed) of course i had 0 sales from them until now, but this is for the long term run. But I try to move them to serp 1 if possible and we will see if sales drop in.
I used several seo techniques and experienced a little bit with canonalized urls, nofollow links, different seo wp plugins and even free bloghost services (which suprisingly give very good results due to the high PR they normally have) and I have made blogs on subdomains (which does not seem to work at all)
The fastest results (google index wise) have the blogs on own domains.

So actually it is very interesting doing that, and despite of overall opinions that this is a boring work, i have to say i really enjoy blogging.