New users is my guess.

They will do a beta tests which mean they will be able to see how people try to abuse and they add new rules to limit the situations where abuse is possible.

I think it's a great idea.

Well, for one, you wouldn't have to share your login. And for two, she's have her own account with her own details/achievements etc.

It really does give the impression they saw the Xbox One announcement and took a note from it (even though they have removed it since)

I see this as a first-step towards actually being able to have two people play different games from one account at the same time. Publishers need to be eased into things like these to agree to them.

I am guessing this is more about the legal side of things. It also allows for sharing without the risk of getting your account banned. While that is likely not to happen when sharing with people locally, sharing an account over long distances would likely raise quite a few red flags and risk account suspension. Now I can share my library with my friends in Norway and Denmark without any risk. Then again, not sure that is something I will really do as we all tend to buy the same games anyway, but at least the option is there now.

Which I wonder if that's really going to stay like that. I personally hope not. You should be held responsible for who you let have access to your stuff imo. It's called Family sharing for a reason. At the very least I'd assume that if it happens more than once that your library gets used for cheating that the person sharing might be VAC banned as well (apart from just losing sharing privilidges). Else people might simply create junk accounts to cheat with a game on Non vac banned account and switch to the next account when it's banned.

So no real changes for me, ok. Still cool feature, though :-) It's always better to have more possibilities.
I'm not really worried about my account being VAC banned over Plants vs. Zombies :D

Now -that- would be hilarious.

I'm not sure if it's allowed by Valve but technically this could be bypassed with a VPN and the great thing about that is that the VPN would be viable for legal actions (which is not an issue if you use a good VPN), not Valve as it's the VPN's IPs that will be used to play the game. I suspect though for convenience sake on Vavle's part they are still against this in their T&A.

*gives access to my three TF2 idling accounts

*gets more cards

I doubt we'll get cards from shared accounts. :P

No remote authorization

Of course you could use a third party remote application to authorize but that could easily become a security vulnerability, likely why they chose to call it 'family' so you don't lend to untrusted friends.

You don't get any action taken against your live account if you lend a 360 game to someone there and they hack their profile to cheat. Even on the same system for digital download games. Other accounts aren't reprimanded if one person messes up. The only way that happens is if the console is hardware modded, and even then just the console itself is banned and not the accounts on it.

As you said, people will just use remote software like VNC to authorize the computers themselves. I could even see dedicated sharing groups spring up that make dummy accounts with just a single or couple games on them. Then they share those among the rest of the group so people can play those games while their main accounts stay open, and they can access those games offline.

I think he meant it's easy to cheat on PC. For example, someone has multiple accounts on Steam, uses one fake account to cheat, gets banned, uses another, etc etc etc.

With this you could cheat indefinitely without jeopardizing your primary account VAC

Unless they are going to give an requirements that you have to be friends with a person you borrow a game from for at least a month or something.

Like I mentioned to Coelocanth before, based on the FAQ there's a chance that if one of your borrowers gets caught in some illicit activity, your lender account will lose the Family Sharing privileges. So yeah, you don't get a VAC ban, but it'll be a one time thing.

If thats the case then it will encourage people making dummy accounts for the purpose of sharing more so than before. You wouldn't even need to remote log in really. Setup a dump gmail account, give the other person the steam log in/password, read them the steam guard pass that arrives, then when they log out change the password on the account yourself.