If the 403 is "Administratively Forbidden", then you have been blacklisted.
Quoting Taylor : > The best way to inquire about specific blacklisting reasons is by sending an > email to a...@twitter.com from the email address associated with a Twitter > account. Include your IP address(es) and as much information about what API > operations you've been making and at what frequency. > > Reasons for blacklisting can include: opening too many simultaneous > connections to the streaming API, too many failed login attempts from an IP > address, repeated following/unfollowing actions, ridiculously unthrottled > write actions, etc. > > This is also good reading: http://support.twitter.com/entries/76915 > And of course: http://dev.twitter.com/api_terms Tom On 9/28/10 10:22 AM, bombonia wrote: > Hi all, > > I've developed an app to tweet from my t-shirt everytime i hug and > this past Sunday, after 200+ tweets while demoing it at Maker Faire > NYC, it stopped updating hugs and I started > getting the 403 in my processing script window added to the seconds > the hug lasted. > > I am using the twitter4j library. > > my account for this project is @bomboniahugs > > I've been invited to the International Symposium of Wearables > Computers in Seoul next Oct 10th: > Please Help! ASAP > > Thank you ! > -- Twitter developer documentation and resources: http://dev.twitter.com/doc API updates via Twitter: http://twitter.com/twitterapi Issues/Enhancements Tracker: http://code.google.com/p/twitter-api/issues/list Change your membership to this group: http://groups.google.com/group/twitter-development-talk