Is posting blog updates to Twitter considered a doorway?

Some websites use their Twitter account as an RSS like service for every article they post. Is that ok or would it be considered a doorway? Adel Saoud, Dublin, Ireland Have a question? Ask it in our Webmaster Help Forum: www.google.com Want your question to be answered on a video like this? Follow us on Twitter and look for an announcement when we take new questions: twitter.com More videos: www.youtube.com Webmaster Central Blog: googlewebmastercentral.blogspot.com Webmaster Central: www.google.com