The ponziani, I think, has fallen out any sort of mainstream view. But I've experimented with it a little bit and found it can lead to a good game (at my level or in a club setting). That especially holds true with blitz where there are some good traps involved with it.
But in general, talking about a lengthy game (or one with no time control), what do people think of this opening? (Note: I've neglected to put any continued variations as their are a number of them and this opening frequently strays from the book very quickly)