IANAL. But in general yes. I have sold 2 different companies and with them the Twitter, Facebook and Linkedin pages, names etc. My attorney said as an asset

IANAL. But in general yes. I have sold 2 different companies and with them the Twitter, Facebook and Linkedin pages, names etc. My attorney said as an asset of the business it is legally transferrable to the new owner, and in fact it usually must be transferred. I am sure if you read the T&C's of each of those sites there will be a statement along the lines of, you are not allowed to setup names/pages for sale. If there, that statement is to prevent "name squatting" not stop a legal transfer of control over an entity. I think it would be nearly impossible for them to prevent the legal sale of an entity and therefore the assets that entity has, nor IMO would they really want to get involved.