It got no differences from writing constructive posts

. But, being a good poster alone not enough but you need to be a good contributor to this community in some unique way.
Perhaps a bit more light should be shed on other unique ways one can contribute to rank up without merit concerns as this. I understand OP's tone right now and as true as it sounds, one has to really give thoughts and do proper research with good presentation to actually attract any merit from the sources they come from. I guess you already know this, but what you don't know is how strict the matter is.
One just has one choice left, sharpen up your writing and research on tech skill. This is a note to myself also.