I think a blog post I wrote months ago is somewhat relevant: http://eduardo.intermeta.com.br/square-should-have-its-own-card http://eduardo.intermeta.com.br/squ

I think a blog post I wrote months ago is somewhat relevant: http://eduardo.intermeta.com.br/square-should-have-its-own-card http://eduardo.intermeta.com.br/square-should-have-its-own-c...