For me, it's all about the title. I don't have time to read every thread any more; the forums are generating far too much traffic to keep up. If I see a thread title that sounds interesting or that I think I might have something interesting to say, I'll click on it, and I very often take the time to share my thoughts once I'm there, unless someone else has already covered my viewpoint. I'm most likely to click on something that says "Help with Photoshop" or something similar.