So, let me get this straight: you seriously believe that Twitter is going to randomly select a handful of users and try to throw the book directly at them (as the person who made the client is not subject to the service's terms of service). Generally the only tort expressabale against someone who violates terms of service is "the service can be revoked" (or like, at worse, the "damages" involved... good luck demonstrating those against an individual user ;P), and so far as we have seen there is no reasonable civil argument (the DMCA certainly doesn't apply and the CFAA is rapidly being determined to not apply); but let's say that this was an option: you feel like some massive hefty fine or maybe a jail sentence for some random user (as again: the person who wrote the client isn't doing anything wrong) is going to serve Twitter's interests here?