Where he talks about the lack of signatures and identification rendering it unenforceable. How does that compare to a common EULA, which also has no signatures or identification?
I teach private law at an Australian university, though equity and trusts rather than contract.
In general, it's not a requirement under Australian law that a contract be signed. Even if the terms of the contract have been reduced to writing (as in this case) there's no general requirement that it be signed.
I don't know much about EULA agreements. I know there is a fair bit of hostility towards them among IP academics, but not because they are not valid contracts, but rather because they are valid contracts whereby users get duped into waiving rights that they otherwise would enjoy under the general laws of IP.
As to the bit about absence of consideration rendering the agreement not enforceable as a contract, I'm not sure I agree with that either. WotC provided something to me: namely, they sent me an email with a link to a site where I could download some documents, and then they hosted that site. In return, I provide something to them: a promise to abide by the terms of the OPTA.
The idea that my receipt of the documents isn't valuable consideration because I have to do the (unpaid) labour of playtesting strikes me as weak, given that I am under no obligation to undertake any playtesting.
I would also tend to favour a different construction of the "Feedback" clause from that offered by the columnist: I don't think that it is imposing a burden on playtesters. The burden on playtesters is imposed via (i) the background law of IP, as the columnist explained, and (ii) the confidentiality clause, which - to the extent that it is effective - limits what you can say about your playtest experience.
The Feedback clause, as I read it, is actually a promise from WotC to the playtester - as the preamble states, they normally do not accept feedback, but on this occasion they promise to accept it. I'm not sure what that promise is worth - for example, suppose that they in fact refused to accept your feedback, and you sued them for breach of the OPTA, I'm not sure that the damages you'd receive would be very high! Why do WotC make this promise? Perhaps to increase the consideration that they are providing to the playtester, in order to better underpin the contractual character of the agreement.
I also noticed the bit about "designated forums" for feedback. This seemed contradicted to me by the clause at the end which said you were welcome to discuss your thoughts publicly: "Notwithstanding the foregoing, you may publicly discuss your thoughts regarding the D&D Next Playtest Materials and your playtesting experience." How do those two stack up?
As I've just explained, the Feedback clause isn't a burden on the playtester. It's a promise from WotC to recieve playtesters' feedback. It gives you, as a playtester, a right to have your feedback received, in spite of WotC's normal practice (as stated in the preamble to the document) of not receiving feedback.
Regarding the online playtesting. My understanding at present is that the restriction is in place because it entails reproducing the content of - at the very least - the adventure, and they don't want people who haven't essentially agreed not to republish (prepublish?) it being able to see it (the non-effectiveness of that notwithstanding - that's what the intention is). However, they are reviewing that at present.
This strike me as right. Going online almost by definition involves producing copies of some of their IP - it will be copied as text or image or as a digital encoding of an oral recitation of it - and they don't want that to happen.
For similar reasons I assume they wouldn't want people tape recording or videoing their playtest sessions.