If you clear the cookies in each user account when you make the account you do not need to clear cookies over and over.
Clearing them will toss up a flag and you in most cases will get a call from eb or pp because it appears you are using a new computer and they will check on you.
If you use different user accounts, do not click on any email links and be careful about signing in and out you dont need to clear cookies all of the time.
| 
