In addition to what everyone else said, comments like yours confirm that it would be a waste for me to check out Firefox for the hundredth time. You are among a sea of comments enumerating the specific reasons why it sucks, and you're here insisting with zero substantiation that it is "effective" and "by far the best browser around". A better approach would be to acknowledge the issues that users have had with it and explain how it has improved.

On the other hand, if your definition of "effective" and "best" describes Firefox the last time I checked it out, then our definitions do not match, and I don't need to check it out again.