Sort:  

If we go by number of votes then it will be possible to sybil attack the comment with lots of little accounts. Some people hold thousands of those.

or Steem Voter choose a random winner?

Random winner would take away from the community aspect of everyone networking and canvassing for votes and would reduce overall engagement.

Coin Marketplace

STEEM 0.18
TRX 0.25
JST 0.035
BTC 97614.84
ETH 2679.02
USDT 1.00
SBD 3.82