Since jarren and I merged accounts, we've had like 20+ 3/20/20's poof.
I myself have only lost 3-4 3/20/20's. When I got my barbs 3/20's, it was before any dupes were out. Apparently all mine are perm'd .09 dupes. All of my 70-15's are still there.
15/70, aka bug manas, are bugged and duped small charms that add 70 to mana and 15 to life.
Mainly used to pump energy shield and make a sorc harder to kill.