First of all, let me tell you that I am new to LingQ, and so far I have been greeted with nothing but pleasantries. Thank you all for that. Now on to the suggestion.
I think it would be beneficial to award points for replying to posts in the forums. Not a huge amount of course, perhaps just 4 or 5 points. Why? Well, by awarding points I think that people would be much more likely to reply to posts, which, in turn, would increase the activity on the forums significantly. This is something I believe would help the learning environment on this site, at least in the Ask your Tutor-forums.
Also, for the people that can't earn a lot of points by correcting/creating lessons etc., this would be an excellent way to make everyone be able to earn points, tutors or not. It's a win-win for everybody.
Now, obviously the risks of someone spamming the forums would increase, but this will not be a problem seeing as how the person in question could easily be punished, either by removal of points (or something in that general direction).
Of course, this is only my opinion, and anyone may oppose. Do you like this? Why/why not? Please share your thoughts, as I would be happy to know what you guys think.
Thanks for taking the time to read this, and thanks for a great site Steve (if you're reading this).