The member who initiates the private will receive a video "archive" of the show (so long as it is over 90 seconds).
Private shows on MFC are 60 tokens per minute for the member.
In a Private, other members can "Spy" on the show for 20 tokens per minute, but cannot interact with the model during the show or see any of the typed chat during the show.
Cam girls are able to receive tips at any time while on MFC, and are very popular in Free Chat.
Many cam girls do token "countdowns" in free chat to do shows for the public audience to view.
They are known as "voyeurs." The member who initiates the private will receive a video "archive" of the show to watch over and over again, which is a big selling point and justification for the price of the show.
Cam girls do not receive a copy of the archive, however.
MFC does not publicly state what the exact calculation of a camscore is, but it is generally known by many cam girls on the site that it is is roughly based on the amount of tokens she makes per hour that she is broadcasting online over a (Calendar)60-day average.
The higher a cam girl's camscore, the higher her placement will be on MFC's homepage, and thus, the more traffic she is likely to get due to better visibility to members.
My Free Cams (MFC) is a very "community based" cam site, in that it has many ways for members to interact with each other in addition to chatting with cam girls.