Upload & Sell: On
I sharpen pretty aggressively while working the image, so I typically resize bicubic smoother in PS when reducing to offset the reduction, then resharpen to eye if needed ... or let it ride, knowing that for web it isn't uber-critical (i.e. non-client use). I don't have a set protocol, it is always image dependent for me. Sometimes I work off the small jpg (3MP), other times the raw (14MP). Also, I'm using an SLR/C (i.e. no AA filter) so I also use different approach with it vs. when I use an AA filter sensor.
Short answer ... Sorry Ben, not much help on this one unless you happen to also be shooting with an SLR/C.