That sounds pretty sketch, but what do I know?

It's a shady scammer, don't even talk to him!

hey mew, i think if you feel something is sketchy, it is better to not risk it. you dont lose anything by not trading and another opportunity will eventually come along.

Run the hell away, but not before reporting him. :D If your gut says something's fishy, listen to it :)

you already know he answer. pass

if it seems not legit, walk away, trust your instincts
I have been trading way to many years(under different usernames, as the older names I got bored of)

of the approx 200 deals I walked away from because they seemed shady.. 3 were legit.

i think it's better to be safe than sorry.

don't take risk

Probably a big hint is what the trade offer was. If it sounds too good to be true, it probably is.

Haven't you learned from your previous scam?

So, the answer is:

NO

Hah, I thought you'd be more seasoned than just 3 weeks. Yes, beware of all new accounts. Beware of old accounts. Always question, always doubt. If you have their 64 bit url they can be monitored.

Don't do it bro, its not worth it.

I wouldn't go anywhere near that trade. Even if you're not at risk of getting scammed directly (i.e. the trade is entirely within the trade window), given the profile you described I think there's a strong chance the items you'd be trading for were scammed from someone else, in which case (a) there's a chance they get revoked when the original owner complains to Steam, and (b) you might be helping a scammer profit from and ditch stolen goods, which is kind of a crappy feeling, imo.

What is the deal?

The fact that even after realising all their rep was fake, you're still considering trading with them, leads me to believe you should never trade.

Using Steam trading there's no risk. If you get a game and the guy does a chargeback you can get the items back writing a message to Steam Support (and he will get a nice Trade Ban).

Anyway, if you don't trust the guy I'm not sure why are you asking for advice in the first place.

Rule of thumb. If the person you are going to trade with makes you uncomfortable, don't trade with them at all. If it's a direct trade via steam trade window then there is no getting scammed.