Interesting keeping a skimming eye on the comments on St Matthew's-in-the-city's own posting of Glynn Cardy's sermon. Commenters are either for the poster - think its humourous, unproblematic, time for the antis to get a life - or against the poster - think Glynn and co are destined for defrocking, hell or worse. Seems there is no room in that particular inn for a reasoned, diplomatic response to the billboard! See how these Christians love one another and prepare themselves for an eternity with their brothers and sisters, not!
(There are some honourable exceptions including one by a friend of mine who is one of a very few identifying himself with first and second names).