Trivial? Trivial to build a site, populate it with critic content for each movie, as either text or scores that seem credible to a particular audience type? Or trivial to carve out market share from Rotten Tomatoes/Imdb/Metacritic?
"Moviefone, Worth 1% of Its Former Value, Is Being Run by One Employee After Parent Company’s Bankruptcy "
IMDB moved from a respectable site to a parody of itself for that exact reason: they didn't resist and today their reviews are complete garbage. They got to the point of removing the comments section altogether when users found how to spot fake accounts that were created just to give bogus ratings.
Rotten Tomatoes has been suffering the same fate, as it's now owned by Fandango (from Feb 2016).
We're IMDB reviews ever good? I used them from fairly early on, but only for actual factual (mostly vast/crew) information, the reviews were always, AFAIR, pretty useless.