| Member | Join Date | Threads Started | Posts Made | Blog Posts |
|---|
 | OptimismIsKey | September 2, 2015 | 1 | 3 | 0 |
 | opustech | January 21, 2024 | 0 | 0 | 0 |
 | or.shohat | June 17, 2017 | 2 | 6 | 0 |
 | oral12 | June 19, 2014 | 2 | 2 | 0 |
 | oral2 | June 19, 2014 | 0 | 0 | 0 |
 | orangebishop | November 7, 2016 | 0 | 1 | 0 |
 | orangechip | February 2, 2014 | 0 | 1 | 0 |
 | orangeman | February 9, 2014 | 2 | 4 | 0 |
| OrangePi5 | December 18, 2023 | 2 | 12 | 0 |
 | oranginalight | October 21, 2020 | 1 | 1 | 0 |
| Orbg | August 3, 2016 | 0 | 0 | 0 |
| Ord2712 | January 29, 2023 | 1 | 3 | 0 |
| Ordnance | April 23, 2020 | 0 | 0 | 0 |
| orea307 | March 12, 2019 | 0 | 0 | 0 |
| OregonGambler | April 16, 2023 | 0 | 3 | 0 |
| Oregonscott | February 15, 2021 | 3 | 9 | 0 |
| oren1976 | May 11, 2015 | 0 | 1 | 0 |
| Oreo5602 | December 23, 2019 | 0 | 0 | 0 |
| originaliets201 | July 10, 2019 | 0 | 0 | 0 |
 | originalscore | March 30, 2019 | 1 | 1 | 0 |
| orionstars | April 20, 2022 | 0 | 0 | 0 |
 | orionstars5 | November 21, 2023 | 0 | 0 | 1 |
| OrkeAA | February 6, 2013 | 3 | 8 | 0 |
| OrkFromPluto | July 17, 2015 | 6 | 10 | 0 |
 | Orlando2001 | March 15, 2021 | 0 | 0 | 0 |
| orodric321 | September 29, 2020 | 0 | 0 | 0 |
| oromedalla | April 21, 2015 | 0 | 0 | 0 |
| Orooola | September 12, 2018 | 2 | 2 | 0 |
| Orooola1 | September 12, 2018 | 2 | 2 | 0 |
| ortega559 | April 14, 2024 | 0 | 0 | 0 |
| Ortensia2020 | November 4, 2021 | 0 | 0 | 0 |
| osamatariq | April 15, 2017 | 0 | 0 | 0 |
 | OSCAR | March 25, 2023 | 0 | 0 | 1 |
| oscar33 | September 6, 2011 | 10 | 59 | 0 |
 | OscarDelgado | January 16, 2015 | 0 | 0 | 0 |
| OscarDelgado11 | May 31, 2017 | 0 | 3 | 0 |
| OscarJ | February 24, 2014 | 1 | 1 | 0 |
| oscuro | September 29, 2017 | 0 | 0 | 0 |
| Oseberg | February 12, 2021 | 1 | 5 | 0 |
| osergios | April 29, 2013 | 0 | 0 | 0 |
| osnheokteo | November 28, 2020 | 1 | 1 | 0 |
 | osrsgold4 | September 20, 2015 | 0 | 0 | 0 |
| osu3131 | March 8, 2014 | 1 | 1 | 0 |
| oswaldwark | March 16, 2015 | 0 | 1 | 0 |
| osyrah | August 12, 2016 | 0 | 0 | 0 |
 | otaber15 | December 5, 2016 | 0 | 0 | 0 |
| otakuboosser | January 4, 2020 | 0 | 0 | 0 |
| Otanna | October 28, 2019 | 0 | 0 | 0 |
| otbspill | March 27, 2015 | 1 | 2 | 0 |
| othercasinoguy | January 21, 2013 | 1 | 1 | 0 |
