Legislation that comes into force on May 26th will make all non-essential cookies (and that definitely includes those used by Twitter buttons) require explicit end-user opt-in before they can be used. Contravention carries a fine of up to £500,000. This affects millions of sites, and yet Twitter offers no straightforward way of creating cookie-free versions of their buttons. There are a few mentions of this problem on here, but nothing that’s going to be easy for anyone to implement quickly and easily. Given that most buttons are created using twitter’s button generator, it only seems reasonable to ask twitter to add a cookie-free option when building them.
Twitter really needs to make some kind of statement about this; while it’s not in their interest to do so (they want the data given to them via cookies), it’s not them that will be liable for the fines.
They’re not alone of course: Facebook and Google+ have the same problem.