Twitter account for sale

We received an email this morning from someone selling their Twitter account.

"Is anyone interested in purchasing a twitter account with over 8,000 followers?

It is now surplus to requirement and instead of letting it go to waste, i thought someone may be interested in rebranding it for themselves."

I know databases are bought and sold every day but this is a new concept to me.

Isn't a successful Twitter account about building up a relationship with your followers?

What are your thoughts? Carefully cultivated network to share information? Or just another database available for sale?