A colleague is unable to post links to his Blogspot-hosted site to Twitter. We both see the message that "This request looks like it might be automated. To protect our users from spam......"
I suspect this is a Twitter spam filter blocking links that refer to an IP address the filter has been told is a source of spam. He has attempted to contact Twitter but has yet to hear anything back.
Would moving the blog to his own domain and OFF of a shared server solve the problem?