As an adult over the age of consent you are able to sign a contract--in this case a rental agreement.

Can the landlord and my co-tenant bring in this new roommate without my consent even though we both signed the lease?

Cold calling, soliciting those with whom you do not have a contractual relationship with, without their consent and/or knowledge would not be a permissible use in most cases.There are many pay per view sites that will give you some pretty, nicely compiled data elements but, nothing is going to give you NPPI data (Social, Account Status, balances, etc.) without going through a gauntlet of qualifying questions and attestations.

I am sick of the damn government butting in on what myself and another consenting primate decide to do in my own car!

We also assess a late payment fee and report a non-payment of rent to the credit bureau {all our tenants consent to reporting when the sign the lease}.

I'd never approve ads that play any kind of noise without direct consent from the user via a click or play action.

I would not do that without some type of consent. 

SImply say that this offer expires unless extended by written consent on June 30, 2012.

Swimming Pools, Trampolines and Fire Pits may not be set up or used on the premises without prior written consent of Landlord.

This helps make sure the investor isn't wholesaling someone else's deal without their consent and avoids placing me in a situation where I place a property in front of my buyer and look like a fool when we try to move forward on the deal.