Last spring an announcement from the platform team at Twitter not-at-all-subtly suggested developers of third party clients should find something else to do, and today a list of changes to its API turns that whisper into a firm nudge. The limit that most directly affects any of the unofficial clients you may be interested in using is that existing apps currently servicing more than 100,000 individual user tokens will be allowed to double their current count, but cannot add any users past that without Twitter's permission. Going forward, any app that needs more than 100,000 tokens to do things lik