I believe the online placement of the petition, presented in 6? languages, is practical, core "marketing" strategy. The internet is the poor man's broadcast medium after all providing scale economies, coupled to volunteer labor, that cannot be duplicated by other method. What's not to love?

The petition's appeal has proven itself and benefits from promotion by ET's editor/publisher in other broadcast media. You want more signatures, given an unstated time constraint. What is that time constraint? Where are the signatures?

Driving traffic further to the petition doesn't require  custom refinements but multi-channel extension into offline venues. That means ET agents (FPers or other) volunteering (a) to accept broadcast opportunities (b) to create events sponsored by or in cooperation with local (film? klatch? partisan? health?) organizations (c) to paper local establishments (d) to recruit additional mirror sites (e) to disrupt conventional ad placement and (f) to mime ... just kidding! Sort of. But surely there are ET residents and associates with a gift for um tactical theater?

Forgive for suggesting, the model developing here is sustainable insofar as any one and more is willing to be creative, fly from the comfort zone. It is anonymity that is unsustainable.

Diversity is the key to economic and political evolution.