I think the underscore option as in google_com was the only one that might be backwards compatible.
(Otherwise I would have preferred a + or a !)
I'm passionate about the idea of brand_com's and just brand_ hence the poll but am happy to be proved wrong by the market because all I really want is to maximise my investment.
I'm also seeing PTS increasing while Namecoin is struggling. (Namecoin down 10% yesterday.)
This is also a very good sign for the .p2p DAC in it's current form.