How To Enable Cookie?

If you wanted to enable rate limiting based on a user's cookie, what percentage of users should you expect will know how to get around the rate limiting by clearing their cookies?

• There are many more sophisticated means by which you can set rules against a unique user's (or account's) activity, but using a cookie-based option is attractive for a signal test. Other (mostly) lightweight options include email verification or FB identity, but it's not difficult to create new accounts with different email addresses and/or Facebook accounts.

• Answer:

  Cookie, what's that? It depends on your user base, but I'll bet  50 credits that no one comes up with credible evidence that no more than 5% of general population knows what a cookie does, much less flush them. Payable to the first answer that convinces me and is not, of course Anon. User.