Tumblr code to see how many people on my page?

Okay cause i follow this guy name Ccal.tumblr.com and he has it set up so it shows how many people are on his page except it says like "$22.00 or "32 Organs removed" or some **** cause hes weird. and my Friend kate's blog says like "3 nillas in my crib" i was wondering if there is a code for that? that either says how many people are on my page? if so GIMME ZE LINK ._.