Yes that is my only question: Linking (multiple times/automated links/multiple keywords) 30 Sub-domains to a Master Domain - Yes or No? And why is that? Thanks in advance.
The problem is that if you host each of the 30 other domains on the same ip address Google will count the whole thing as a link farm, which will make all the sites fall out of their listings completely. The problem is making Google think that each one isn't spam.
You will be perfectly fine, theres not a problem at all as long as you are creating 30 different and unique websites and linking them to 1 main hub. Keep every domain unique and specific to its niche, and then mix it up on the main domain name and put a little content from each sub domain and then link them all to the main site. That should work fine!
I agree with your statements. Google will take such situation as link farm and your site will be missing from the SERPs.
Didn't you see my post above.....? That just isn't true, plain and simple.... Do I really need to start bustin out the links to proof?
I see no issues with that. Even google's subdomains point to the main domain and so do blogger's subdomains It's natural for subdomains to link to main domain.