Darn! This is always going to be one of the ones which got away - read this blogger's post from this morning:
http://wislander.vox.com/library/post/cafe-press-april-fools-joke.html#comments
Oh, if only! Had this been an actual announcement of a real dating site, I could have blogged about it thusly:
"My parents met online but all I got was this crummy t-shirt!"
I will keep hoping that the good folks at cafepress relent and open their own dating site. There are too many good jokes just waiting to be used.