Here is a little story on how I have been using Stack Overflow for about one year.
I first created one account on stackoverflow.com. Posted some questions, bla bla, then started to add tags to filter the "noise" (don't get me wrong : "stackoverflow (community+content) is amazing").
Then, I discovered new verticals and repeated the same pattern. Created one account, added tags...
This morning, I discovered "filters" and thought "All the content (without the noise) from the different verticals on one single page ? It sounds amazing".
But I don't understand the difference between "tags" and "filters" in that context. Do these two features have an influence on each other ? If so, how ?
Went to the FAQ, did some research but didn't find anything interesting.