IMO, membership needs more tangible benefits. I don't plan on shopping at the e-store unless the discounts make it competitive with other online retailers, and I don't really have a use for PDF copies, uploading larger files, or an upgraded forum status (ok, maybe I would like this
). None of those really grab my attention enough to warrant becoming a member, although I would be willing to just on the basis that the forum needs help financially (hopefully to expand offerings).
What about a private member only forum section? Exclusive access to some contests?