Steam Family Sharing how does it works?

[mark.]

Yesterday i tried to publish review on steam about game from Family Sharing and it says i cannot publish it until i own the game. So question, what i cannot do with Family Sharing games and why i should but the game instead of borrowing from Family Library?

[Ogami]

Only the original owner of the license can write a review. Otherwise this could easily be abused to push or downvote a certain game if only one of every 6 people who write a review would need to own a copy.
Family Share games for all intend and purposes act just like your own game in most circumstances.
The playtime is recorded and visible on your profile, you unlock achievements like for your own games and those count for your achievement average and so on.

What is different with games you play over family share is that you cant write reviews for them ( as you just discovered), you cant get card drops from playing, only the original buyer of the game can, and the games wont count for your game number total on your profile and wont appear in the list of "owned" games on your profile.

Thats about it.