In building a startup I've found that users who complain more tend to be more interested and engaged. People who aren't interested won't complain because they a

In building a startup I've found that users who complain more tend to be more interested and engaged. People who aren't interested won't complain because they are not interested. Of course we also have happy users who never complain, so by no means is it a perfect indicator. Just saying complaining is not necessarily a bad sign.