Here's a thread that I started concerning meer chips, although it's not titled very well.
http://pipesmagazine.com/forums/topic/stocking-up
I still like them and use them for every smoke. You can still get a gurgle or moisture at the bottom, but the tobacco will be above all of it, in addition to some other benefits. If it gurgles, it will most likely happen early-on in the smoke on a humid day with tobacco that is not quite dry enough, and I'll just send down a cleaner and that will be the end of the gurgle. ::
http://pipesmagazine.com/forums/topic/stocking-up
I still like them and use them for every smoke. You can still get a gurgle or moisture at the bottom, but the tobacco will be above all of it, in addition to some other benefits. If it gurgles, it will most likely happen early-on in the smoke on a humid day with tobacco that is not quite dry enough, and I'll just send down a cleaner and that will be the end of the gurgle. ::