Quick question about a popular guide

9 times out of 10 the person that sends a phishing link here lately has been compromised to start with and will only send the same message with the fake URL to everyone online on that friends list and then go offline. The account won't come back online till the real owner regains control from Valve thru support ticket. To do something what this guide suggests is basically getting the items from a victim that already fell for the fake URL and is very wrong.

I see a few things wrong here:

• Regardless of how you're looking at it, you're knowingly trading with an obvious scammer alt. Per SteamRep's policy, that can earn you a caution mark.
• If you do receive items, they probably either belonged to the owner of the hijacked account you're talking to (as HorseDick suggested), or they were stolen from someone else who was hijacked. Either way, they're stolen, and you do not want to be in possession of stolen goods - either from a reputation standpoint or in dealing with Steam Support when you end up trade banned for it.
• Telling someone "I'll do X if you give me Y" is not "asking for free items", it's a trade agreement. I'm not sure if it's enforceable or applicable in this case with all things considered, but breaching a trade agreement will get you marked, even if it's with a scammer.

I'd also like to point out this is neither practical nor sustainable outside of one or maybe a couple isolated encounters. Most phishers are bots running on newly-created or hijacked accounts, and as such won't respond or acknowledge anything that isn't pre-programmed. If you do chance upon an actual human hijacker, (s)he will pick up on the scheme before long. There aren't that many people phishing, just a handful using a lot of alt accounts, and any given phisher probably won't fall for it more than once. There are probably multiple people trying it, especially if there's a guide telling them to, and the few phishers who actually do read and respond when sending phishing links will catch on pretty quick.

That's how I see it at least. I'll leave it up to an admin to give the final, official response.