On the one hand, I am with pipebaum81 and mso489 - a bit of rim char is a mark of honor and love. On the other hand, sablebrush52 is right about serious rim char. My "special" pipes are never overfilled, and flame seldom touches the rim, never intentionally. My knockabout pipes are often piled high to get a strong ember from the start (so I can put on a windscreen without extinguishing my pipe) and the rims are often darkened as a result. I sometimes wonder which pipes I actually love better, my trusty knockabouts (typically cobs or low-end American estates) or my pampered indoors pipes (typically higher-end American or English estates).