Left wing Orthodox groups like Edah are
a) not really frum
b) frum, but have a totally warped idea of Judaism
c) interesting, but not my cup of tea
d) often thought provoking but occasionally go too far
e) the future of Orthodoxy
f) Leave this question out of my results
I know next to nothing about Edah.
While I would not want the left-wing orthodox groups I am somewhat more familiar with to be running the show in all of orthodoxy, I think it is useful to have them on the fringe, just as I think that groups on the far right are worth having around, as long as they're not too powerful. I think that moderation is usually the way to go, but sometimes we need extremists to show us we're making a big mistake or not seeing things clearly, or to take risks and/or drastic action when the mainstream is unwilling to do so. Therefore, (d), but with the caveats that my answer does not apply specifically Edah, and that the word "occasionally" may understate the case, depending on the organization.