This is pretty disappointing. I've spent a good amount of time over the years on various forums, and being able to link freely to relevant information is really helpful.
I don't understand why there is so much fear about people linking to "non-credible sources". If it's a bad source, people can demonstrate that by pointing out its flaws; it doesn't need hand-holding by mods to designate what sources they find acceptable or not.
For example, many people find Wikipedia to be a powerful starting place for understanding a topic, and I agree. I respect that the owners disagree on this, though would urge them to rethink the decision, and ask: even if they don't consider Wikipedia and such reliable, is it really to such an extreme that discussions get *damaged* by it? At worst, I believe it would just not contribute much. And in the absence of a solid danger, censorship tends to just reduce community interaction. I know that on the personal level, sadly, the strict linking policy has reduced my likelihood of engaging here much. (which is a shame since it seems to have quality conversations)
Also, I am sad because they declined my first post, which linked to a page I spent 5+ hours creating specifically for one of the threads, because they said it was self-promotion. :'(