Is there a primer on the desirable attributes of fountain pen inks. I have browsed a few of the stickyed ink reviews but I feel there is a lot that I'm not quite getting from them, not to criticize the reviewers in any way. Some aspects are self evident, such as drying time. Bleed through would seem to be at least partially dependent on the type of paper used. Feathering, is that desirable or undesirable, or does that change with different uses? Any guidance would be greatly appreciated.