Accurate rating should be based on much more data and not just on addresses history, icorating.io is just a prototype that we will improve in the future.
If someone want to raise some funds, he must prove that he owned the address/account, this is on of the most strongest way to avoid fishing/fraud.
Maybe all of these ICO companies should use a middle man or third party to raise their funds, someone with a proven records that can save the money until the ICO process is over.
Because right now, people are losing tens of millions of dollars and we cannot trust the ICO's companies.