Having followed DM's link to the student room, and then looked around at the sort of posts on there it struck me that, perhaps, it isn't always obvious what sort of reply is appropriate to give people. I'll illustrate what I mean from an example, which I've probably not remembered that well but it covers the basic idea. I was looking at a thread where someone had a cubic expression split up into 2 factors, (x^2+4)(x-1) or something like that. The student was stuck trying to prove the equation only had one real root. By looking at the factors you could see there were 2 complex roots and the one real root. A suggestion was given to look at the cubic equation and consider it's maximum and minimum points and what was happening to the curve. If you did this you would clearly see why the curve only had one real root but it seems like a sledge hammer to crack a nut. Other people suggested looking at the factors, although some posters got their x and y's muddled up. The point I'm trying to make is because people have no idea at which point this student was stuck they were having to make suggestions that may or may not help. As another example, on the NCETM maths cafe forum, sorry I have no idea how to link to it, there was a problem posted connected with sequences having certain properties. One of the posters mentioned that they had found lots of sequences, that occured in primary school, but never mentioned what they were. I found this really frustrasting as there was no indication of what she meant. So my thread is really about how do we make posts as relevant as we can for others to gain from them. We have no real idea where the posters are coming from, nor what would help them, and perhaps this may be why people don't post and instead lurk.