My main product is database conversion software. As it supports tons of databases, it's fairly easy to generate thousands of landing pages simply by variating source/target database names, connection information etc. In fact, I autogenerated almost 25k pages that way.
As I didn't want to jeopardize my main site, I placed all that content to a new microsite (www.fullconvert.com) which had no history and no inbound links. Results were nice - site is live two months and in second month already had 1300 visitors.
Now, my question is - should I create the same thing on my (old and rather authoritative) main site www.spectralcore.com? I could use a different template to avoid duplicate content. Of course, my main concern is being penalized by Google.
In my opinion, this autogenerated content is fine because it provides (tons of) laser-focused landing pages, so visitors will instantly recognize they found what they're looking for. But Google might disagree!
What do you think? Is there a danger in trying to leverage authority of my main site in adding 20k+ autogenerated pages with inbound no links to them?