Rollitup's ranking system is based on the amount of posts you have:
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