Above all, do you make a good use of the forum signature function? Forum signature can be easily forgotten by those necroposting visitors. In fact, everything, no matter how trivial they are, can be developed into big achievement only if you do it diligently and treat it as a career. Every possible approach to increase traffic is practical for those diligent people but never for those sluggish ones. The more trivial it is, the more delicate and sophisticated skill it requires sometimes.