The Spirit bar at 2046 Mass. Ave. in Porter Square has closed, and reopens this weekend as The Dubliner Pub. A full-page ad on page 5 of this week's Dig says that the Dig will buy everyone two free beers this Saturday.
Their web site is http://dublinerpubboston.com/ but doesn't have much information yet.
Their Facebook page is more informative and has a copy of the Weekly Dig ad.