Nothing will happen. Unfortunately this is the truth.
Since its clear this is going nowhere and Alberto isnt going to pay, allow me to suggest duped US investors another way. Under the securities act of 1933, you are very likely able to bring civil action against Meni Rosenfeld
The SEC may not bring actions on behalf of individual investors, but the Securities Act allows individual investors to bring civil actions under several provisions:
http://www.law.cornell.edu/wex/securities_act_of_1933Take note especially of sections 11, 12 and 15:
One quote from section 15
(b) Prosecution of persons who aid and abet violations
For purposes of any action brought by the Commission under subparagraph (b) or (d) of section 77t of this title, any person that knowingly or recklessly provides substantial assistance to another person in violation of a provision of this subchapter, or of any rule or regulation issued under this subchapter, shall be deemed to be in violation of such provision to the same extent as the person to whom such assistance is provided.
http://www.law.cornell.edu/uscode/text/15/77oNow you may or may not believe Meni knew or should have known this was a scam, but that may not even be material; Meni knew or should have known he was soliciting or aiding in the solicitation of funds for an unregistered security from (among others) US investors. That is a clear violation of the security act by itself, even if bitdaytrade were a legitimate business, or Meni could reasonably have assumed this was the case.
IANAL, so obviously anyone wanting to go down this road should talk to his lawyer first. I also dont have an opinion on whether it would be "fair" or "moral" to meni to take this approach, thats entirely up to duped investors and possibly courts to decide. Im merely pointing out an option that I suspect is more likely to yield results than waiting for Alberto, and that if nothing else, may motivate Meni and future "IPO managers" to take their responsibility in vouching for potential scams a bit more seriously. What you do with it, is up to you.