Live match updates have been added to teams on RugbyTweets in the Guinness Pemiership, Magners League, Six Nations and Tri Nations. This means that all teams in those leagues will get tweets sent to them when there is a try, conversion, penalty, yellow card or red card.
I started the system with the England v Italy Six Nations match and tweaked it during the match. Let me know in the feedback forum or reply to @ollieparsley on Twitter if you see any issues.