So I just had a contractor cold-call for driveway sealing--he was in the area touching up a driveway, had some leftover, could do mine right now and he'd take some money off. I haven't researched it so I said no--it's no savings if I chose poorly, right? So I do a bit of research and it seems somewhat unknown if it really prolongs driveway life. Cracks are bad and need to be sealed, and black sure does look good--but it's going to last or not on the basis of if it was done properly in the first place. Link1 mentions this, and sealing-opponent claims to be in NH no less--Link2 So, while I doubt there is a true BITOG consensus, is it worthy of discussing? Also, is there a recommendation for a crack sealer? I'm guessing I can just clean out the crack and go to Home Depot and get ___, but maybe I really should buy ___ instead? Edit: in case not clear, something to fill cracks, not a "sealer" like for the rest of the driveway.