If you are using the api.twitter.com endpoint and signing your request with OAuth, you automatically get this higher rate limit. It's currently at 350 but we are planning on gradually ramping it up to a higher level. This was announced on this mailing list around the original announcement happened at the Le Web conference in early December.
On Mon, Jan 25, 2010 at 9:25 AM, Jaanus <jaa...@gmail.com> wrote: > I am experimenting with some clients. In the last few days, I'm > seeing: > > X-Ratelimit-Limit: 350 > > AFAIK this hasn't been announced/acknowledged anywhere, so not sure > exactly what's going on, just wanted to shout out here. I am only > using OAuth and "normal" REST. I don't know if/how this affects Basic > Auth and search API-s. > -- Marcel Molina Twitter Platform Team http://twitter.com/noradio