AKA: Sez who?
Every now and then you might see an answer that looks wrong, but has received a lot of upvotes and even been accepted. Where did that answer come from and how do we fix the current terrible state of affairs?
Scripture is never interpreted by popular opinion, but is always itself alone the final rule of faith and practice.
There are right answers and wrong answers. When we try to discern what Paul meant, or Isaiah, or Jesus, it is not a subjective question of what is meant by a character in a book, but an extra-textual question of what the real-life historic person intended. Similarly for word studies or translations, etc.
But we must hold no pretense that we are deciding in any "authoritative" way which answers are right and wrong. We do not generate truth, we can only point to the authoritative source, scripture itself.
The answer to that depends entirely on what you mean by "authoritative":
No: There is no official organization vetting the answers here and the site is not endorsed by any religion, institute of higher learning, or publishing house. Correct answers and bogus answers are mixed together and there is no guarantee of validity. (Think Wikipedia.)
Maybe: Over time, this site aims to collect the best answers anyone can find to the questions posed. If you find or know a better answer to a question, answer it yourself! If you see an answer that you like, vote it up! You can help make the internet a better place to learn about the Bible.