What if I made a bunch of blogs within the same niche and linked between them?Would that be a violation of adsese rules?
You should refer to google guidelines and policies instead of having a discussed on the forum. That is the place where you can get the accurate answer from.
It wouldn't violate adsense rules. But you have to think about the opportunity to host all your content on only 2 or 3 sites maximum instead of 10 blogs.
You will get many suggestion here which makes you confused. It better if you read the ad-sense guideline, you will get the proper suggestion.
no, but if the quality of those sites are crap, then all the linking is still going to be crap and won't benefit you
Linking between them is not against adsense rules, but it google may punish you in search engine rankings if it deems the links to be of poor quality.