  :And re IMDB specifically, I use it several times a day, for years, and to date I recall one possibly incorrect entry. It's main problem is missing bsdata, and that is much less of a problem since it was acquired by Amazon. It gets information directly from producers. Obviously any data entry methodology is subject to human error at some level, but the error rate for this is very low and mainly from the production companies themselves, not the database. In the absence of contradictory facts, countless Wikipedia editors routinely rely on and cite IMDB as an authoritative source; production companies themselves rely on it for distributing information.  