Has leaving no tip at your buffet table become a trend? I started seeing it at the Wynn as patron after patron left their tables without so much as a dollar left for their server. I started watching for it on my last trip to the Wynn and Bellagio buffet and was really shocked to see how few people left tips. This isn't like cocktail service where your CW can simply not return to your area if you stiff her.
I think if you can afford the $35 it costs for the buffet, you can at least afford $5 to your servers for filling your drinks and removing your plates.
There's another thread where a poster asked about the appropriateness of tipping specialty food preparers, God love him/her.