The internet is an amazing place and no matter what your niche or hobby may be, there will always be a place for you.
Reddit is a great example of the power of an online community, and of how a platform designed for thousands of micro-communities can become an incredible place for crowdsourcing knowledge.
One of my favorite subreddits is r/whatisthisthing where people post pics of random things they've found and hope that the hive mind can find an answer.