Gravity joined MPGH on Oct 2012. He was one of the Fitbit SE'er on MPGH and have done over 300 orders in just a month. He has Fitbit SE service in User Service (Marketplace) since 2015, the oldest Fitbit service that is still active until today. You can visit his service [https://www.mpgh.net/forum/showthread.php?t=1078234 here].