I agree with you guys, as I almost never use teflon tape on anything, anymore...however, in a pinch, I have applied it with the two important points:
first, I always fold the first wrap or two in half longitudinally, so that the folded edge is closest to the end of the fitting or pipe threads...this reduces the likelihood that little shreds off the edges can get inside the system...
second, I never wrap over the end of the fitting or pipe, or even the first couple threads...keeping the tape back from the end of the threads again reduces the chance the tape can get into the system...
this is important with natural or propane gas systems around the house, too...bits of tape will clog those tiny orifices in the burners...(rectorseal 5 is the best pipe sealant)...
and when a fitting or pipe is loosened, it's almost impossible not to have the tape residue & shreds get into the system...
so, like the previous posts, it's best to not use teflon tape, if possible...

epi