Heavy weights site
Not sure how active it is but there is one here on OH: http://www.obesityhelp.com/forums/bmi_over_50/
Duodenal Switch (Lap) 01-24-11 | Surgeon: Stephen Boyce | High weight: 250 in 2002 | Surgery weight: 203 | Lowest weight: 121 | Current weight: 135 | Goal weight: 135