Increase account limits for legitimate uses


We’re running a service that tweets for a personalised cycling weather forecast to subscribers This is delivered as a mention in time for the subscribers morning commute from the @onediarybot account.

Unfortunately we’re now hitting the daily update limit threshold which means people aren’t getting their forecasts in time.

This seems like a legitimate use of twitter given the messages are

a) subscribed to
b) personalised

Is there anyway the limits can be increased under these circumstances?

Thanks in advance