Some Community Challenges can be repeated numerous times, netting you points every time they are completed.  However, all repeatable Challenges have a specific time limit set between completions, meaning that you will only receive credit and Prize Points once that time limit has passed.  For example: Logging into the Verizon Games on Demand service is a repeatable Challenge.  Every time you log in, you receive 100 Prize Points.  However, the time limit set between logins is 24 hours--that means once you log in and receive 100 Prize Points, you will only receive another 100 PPs and login "checkmark" 24 hours later. 

So, let's say you log in for the first time today at 1:00 PM.  You receive 100 PPs, and if logging in is a part of an uncompleted Trophy Challenge, you will receive one login tally towards that trophy.  You leave, then log back in at 5:00 PM.  You will not receive 100 Prize Points or login credit, because only 4 hours have passed.  But, if you log in again after 1:00 PM the following day, the time limit has passed and you will earn PPs and credit again.

Below is the list of repeatable Challenges and the time limit between each.  If you do not receive credit or Prize Points you feel are due, make sure that the time limit had passed before you completed the task(s).  Keep in mind that you can complete these tasks as often as you like, but they will only count after the related time has passed.

Add a game to Favorites: Credit: 10 minutes, Points: 24 hours
Play web game: Credit: 10 minutes, Points: 24 hours
Log in: 24 hours
Invite friends*: 24 hours
Play the Game of the Day for 30 minutes straight: 24 hours

Because we are in Beta, these time limits may change on occasion to best accommodate current challenges and player activity.  This list will update within 24 hours any time a repeatable challenge time limit is changed.  If you do not receive points you feel are due, make sure to check this list and see if a time limit has been altered.

*Please note: You can now receive up to 5 Invite a Friend credits at one time by filling in all 5 blank boxes on the Invite Your Friends form.  You will still receive 100 points for the invitation, but if you are trying to complete a Challenge that requires multiple invites, you can now receive multiple credits in one send.  If you want to send more than 5, you will have to wait the 24 hours for credit to register.