Should anybody have to buy an account when he can create one? Does there any legit reason? I don't think so !
This is like using fake identity to deceive others . Isn't!?
If it's not, then the board of "invites and accounts should match your need .

Warn to everybody not to use phishy methods because you put yourself and others at the risk of a great damage .

Always remember that scams are not moderated by bitcointalk forum in any possible way. In result, the question to your answer is :
Yes it's allowed as it isn't against forum rules but it's discouraged and you may have red mark in your profile from DT members.