> Here's my approach - for every comment you leave, you give one of your rep points to the person on whose post you leave that comment. The rationale is simple - the post has attracted your attention, so it's worthy of additional reputation.
But, if you have a good idea, then the OP will update their post and you can safely delete your comment, regaining your rep point (but leaving a rep point with the OP). If nothing happens, and you leave your comment there, you lose your rep point and if it is eventually deleted by a Mod, you lose it permanently.