Here is how the reputation system works, it has been modified to stop over rep's.
Default Reputation
What reputation level shall new users receive upon registration? Make sure that you have a reputation level that is at least equal to or less than this value.
10
Number of Reputation Ratings to Display
Controls how many ratings to display in the user's control panel.
10
Register Date Factor
For every X number of days, users gain 1 point of reputation-altering power.
365
Post Count Factor
For every X number of posts, users gain 1 point of reputation-altering
power.
500
Reputation Point Factor
For every X points of reputation, users gain 1 point of
reputation-altering power.
1000
Minimum Post Count
How many posts must a user have before his reputation hits count on
others?
10 posts
Minimum Reputation Count
How much reputation must a user have before his reputation hits count
on others?
100
Daily Reputation Clicks Limit
How many reputation clicks can a user give over each 24 hour period?
Administrators are exempt from this limit.
3
Reputation User Spread
How many different users must you give reputation to before you can
hit the same person again?
30
.
.
I think the magic number is 200 posts.
0 Stranger
25 Learning How To Roll
50 Able To Roll A Joint
100
marijuana Toker
200 Ganja Smoker
400 Pot Head
420 420 TIME
700 Stoner
1200 Teaching How To Roll
1600 Veteran Smoker
2500 Mr.Ganja
5000 Super Stoner
10000
marijuana EXPERT
50000 Ganja God