This is not a valid analogy. Accounts and trading are not forbidden by the rules.
Really?
But account trading is highly discouraged and can attract tags from DT members because they very well know that people buy and sell accounts for unethical reasons. The practice also encourages account theft. But you just decided to ignore the tags and send the money anyway.
Now I guess you know why the practice is high frowned upon by the community
Flag against the user:
https://bitcointalk.org/index.php?action=trust;flag=3131