I liked most of Cam. There was a lot of tension built throughout the movie, and Madeline Brewer was great. The ending really didn't do it for me though.
I really don't get what all of the outrage is about. Other than being a little too long, I thought it was a pretty good film. There were some shocking parts, but this is also a horror movie with a serial killer as it's subject. Then again, I've seen a lot of horror movies in my life, so maybe I'm a bit jaded. It's also an arthouse film, so there's that too. If any of this doesn't sound like your cup of tea, you may want to skip it. :)
My expectations were a bit off for this movie. I was expecting a straight up horror movie, probably because it is written and directed by Leigh Whannell, but no worries. My fault for not checking the genre beforehand. Having said that, I really enjoyed it. It's an interesting story, has great visuals, really good acting...and all on a $5m budget. Very impressive.