The one problem here is that the whole premise is a fallacy. This is attempting to earn credibility by association, which is wrong.
The fact that the Electronic Frontier Foundation is willing to accept Bitcoins as a donatoin mechanism is notable so far as it is providing an additional means to donate to their cause, and that at least somebody has looked into Bitcoins long enough at the EFF that presumably they have one of their computers running a more up-to-date version of Bitcoins on one of their computers. As a background task where nobody really has to do anything, it is a small thing that does have some implications, but nothing really significant.
I remember when open source software sort of gained some significant credibility, and two significant events made that happen:
- Netscape deciding to "open source" their software, giving the beginnings to Mozilla/Firefox. While Netscape Navigator ended up becoming a dinosaur, the basic core of the software lives on after a fashion and only has been sustained because of open source software
- IBM adopting Linux for its mainframe business. Before Linux started to show up on the mainframe computers, the entire division was in decline and there were rumors that IBM was going to shut down the entire mainframe division altogether. Instead, when they got Linux going as virtualized servers on mainframes, it not only brought life back to the division but became a significant source of revenue for the company. For IBM, that was a huge deal. It didn't hurt that the evil IBM suddenly became the white knight defender of open source software (aka IBM v. SCO and associated lawsuits).
I don't see the EFF "endorsement" (as little as that is) to be as significant as either of those two events for open source software. It would be interesting looking in hindsight what kind of "killer app" may show up to spur on Bitcoins. This has been speculated in numerous other postings on the forum here, but at this point in time I don't think anybody knows what it might be.
I don't think it has been discovered or invented yet, but to me Bitcoins has the feel of a technology that is going to launch into that kind of stratum of concepts eventually, as when it hits the big time it will hit it hard. We're still at a stage with the idea right now where it is mainly early adopters and experimenters. All that the EFF acceptance has pointed out is that perhaps the currency is moving away from that first round of acceptance to something perhaps a little mainstream.
A world-wide crash of major currencies might spur on acceptance of Bitcoins in a big way, particularly if hyperinflation follows. I hope that isn't the real killer app, however.