Personally I don't like links behind paywalls. I also respect the desire of the publisher to have a paywall, so I don't read the articles even if I can find away around the paywall. But, I can't really see a downside to posting the links. Either they will be voted up and I won't read it, or it won't be voted up and I won't read it. But if it's voted up, I guess large numbers of people want to read it. The world doesn't have to revolve around me. I think that the best thing people can do if they see an interesting topic posted is to try to find an equivalent non-paywall article and submit it. Frequently I've seen paywalled articles replaced by non-paywall articles, so I don't think there is really a problem whatever you do.