I agree with this.  There is pretty much no way to form a union under current nlrb rules for online workers, especially with the current nlrb makeup.  Without the legal force of a union, a strike would be difficult to maintain, and, well, so would any other sort of economic pressure, like a slowdown.

I am not a lawyer, just a law student, so take that with a grain of salt.  I have taken both labor law and employment law, though.

A more productive mode might be to start a "member-owned" version of something like e-bay.  Let the rules be set by a wiki, or something?