[yugamrap]

I've done it a few times with Hefeweizen since it's a style that's expected to be cloudy.  For other beers, I force carbonate.

[novabrew]

No.  I started kegging because it was easier and quicker than bottling.  This would be like taking a half step back.

[euge]

I brew in bursts. One month I will brew five batches, then I will brew nothing for the next month or two. And my gf and I don't drink enough to finish the kegs in time for the beer. So I frequently prime my kegs in order to save CO2 (well, in order to save a trip to LHBS to refill my tank). I have been shocked at how long a small amount of CO2 lasts when I have pre-carbonated kegs. I have wondered if I over-carbonate, and reduce the pressure, will the CO2 move from my keg into my gas tank? Mostly I am just curious how many of you prime your kegs, and if there is any good reason not to.

I have taken on this habit. More of a convenience issue. No shaking of kegs or repeated pressure-ups to bring to to proper volumes. Use 3 oz sugar per keg and it's perfectly and easily carbonated. And a blast of CO2 seals the lid of the corny right off the bat.

I do it because the kegs will sit for another 3 weeks or so before they find their way into the kegerator and quite simple to do. Haven't really noticed any clarity or sediment issues at all.