No, it isn't babysitting... it is enabling users to make informed and considered decisions.

If DT were not able to tag an obviously sold/bought account (which is what gwsukabokepjerang is advocating for, they want only "confirmed" buyers/sellers to be able to leave feedback)... how exactly is a "dumb lender" supposed to conduct "due diligence and risk calculation"? How would the "dumb lender" even know that the account was sold?

The obvious flaw in gwsukabokepjerang's argument, is that there is no facility to confirm buyers/sellers on this platform. There is nothing to stop a user from creating 100 alt accounts and leaving themselves 100 positive reviews. How would that let a user conduct due diligence? This place is a discussion board first and foremost... and simply has a "marketplace" board where people can put buy/sell notices. This is not amazon, it is not ebay... yet, that seems to be what they want... BitcointalkBay or something? *shrug*

Anyway, personally, I'm more for tagging bought/sold accounts as "neutral", as opposed to insta-tagging them red... This would then flag the account as bought/sold, so users know that previous trade history and feedback is no longer valid. If users are not checking the complete trust history (trusted AND untrusted) of anyone they conduct business with, then that is their problem. I'm a big fan of personal responsibility... just like "be your own bank"... you need to "be your own security department"!  

If a neutral tagged account then does something stupid like scam or spam for sig etc... then sure, go and tag them red.