The success of ORM is defined differently by different people according to their targets for their business based on how small or big they are. One of the most basic measures of the success of ORM is that no negative review about you or your business pops up on the first page of google. If you opt for a detailed plan to manage your reputation, you may get access to no negative reviews up to 2-3 pages as well. It all depends on the discretion and targets you have set for yourself..