TiSP is obviously a joke, but I thought Gmail Paper (http://mail.google.com/mail/help/paper/more.html), http://mail.google.com/mail/help/paper/more.html), also

TiSP is obviously a joke, but I thought Gmail Paper (http://mail.google.com/mail/help/paper/more.html), http://mail.google.com/mail/help/paper/more.html), also "announced" today, is better, and more like the style of their prior April Fool jokes: it's subtle enough to get some people thinking it might be true.