Wow, wiki doesn't know what HashTag''''''s are? Does it know what Twitter is? Searching ... nope, it only knows what a TwitterConsultant is ...

http://media-cache-ak0.pinimg.com/736x/fa/db/17/fadb171d748422fec43f5071ef09b0e3.jpg

This symbol: # sometimes called a hash mark is used by SocialMedia to designate what we here call WikiWord''''''s -- links to other pages.