My idea of how tags work would be on top of subreddits. Subreddits are a fantastic idea and make reddit reddit but tags would work along side that and a way to

My idea of how tags work would be on top of subreddits. Subreddits are a fantastic idea and make reddit reddit but tags would work along side that and a way to associate stories with multiple subreddits. For example, if a post could be tagged "startups" and was posted to r/business, when I tried to find other subreddits besides r/startups about startups I could search "subreddits with x or more stories tagged "startups"" and I'd be presented with r/business. They wouldn't exist as a replacement for subreddits, they'd exist along side and serve as a way to connect subreddits by topic. Subreddits currently exist as their own entities with no crossover which doesn't work well for expanding a users subscriptions to other subreddits relevant to their interest.