The links are useful and welcome if there's information about technique or a question along with it - no problem with that. I also like seeing them when they're asking for specific feedback: "I've tried a new technique/style/Bryce function here, what do you think?" They do get 'spammy' when there's only "Look at my new image" - one of the best things about this forum is that there's very little of that. It's safe to assume that we all check the Bryce gallery and look at any new postings that catch our eyes.