Used to be helpful. Now it's the opposite. I've seen many trans-friendly accounts marked as transphobic and vice versa. Looking at other people's experiences, this seems to be a result of various harmful attempts to divide our community. In the years since installing this add-on, I slowly realized how unreliable it was. I've learned how to examine accounts/websites to determine for myself if they are truly transphobic, and I encourage others to do the same. This add-on is less than worthless to me now - it's actively misinforming me. I will be uninstalling it.