It depends what youre doing. If youre doing a collab project you could use mac, windows, or linux. But the basis and best option is Windows Professional 64bit.
Actually, two options are correct:
They allow private messaging. - this is your safest option, as review sites don't offer private messaging (many rewiews are anonymous, so that would kill the point), but all forums do.
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You need to sign up to be a member
</span>Actually, this is also true, as many, if not most forums do require you to sign up, so that it is visible whenever a certain person posts again - otherwise you won't know if you're talking to the same person! however, many review sites, for example reviewing doctors, let you post without signing in.
