Since may seem like a silly question, but since I have no experience with on-site dining, I was wondering if you tip for buffet meals. If so, how much and who do you tip? I know that at home, I don't tip and buffet places since there are no servers. 

Well, I've never tipped at buffets in DW as we've always had the DDP & there is an 18% tip already added in to it. However, when we eat at buffets elsewhere, we always tip 10--15% as the service staff does help removing plates, filling glasses, etc.
We tip pretty similarly to what we do at TS. My experience-waiters at Disney buffets work hard. Water, drinks, clearing each and every plate that has been used, and so on. They really do help make the overall experience pleasant.
I was wondering if you tip for buffet meals. If so, how much and who do you tip?
You should be tipping at buffets at home also, here on the boards people say at least 10% up to 20%. I am a server so I always tip 20% even at buffets..
Those links are not valid as disney is an exception. If I go to golden corral, a high school drop out asks me what I want to drink, and walks off. At disney buffets the servers are helpful, friendly, talk to the kids, know what times the parades are at. I've barely gotten disney level service at normal restaurants around town, yet along at a buffet.
Even disney its self says the tip should be 15-20% for quality service.
I would say you should tip at least 10% at buffets. If you really can't afford to leave that much than you should eat elsewhere, leaving the table open for someone who will tip the customary amount.
Whether or not I can or can't afford it is really neither here nor there (BTW, I can), and I find your remark about "leaving the table open for someone who will tip the customary amount" incredibly condescending.
I'm just trying to figure out what "customary" is at Disney. I'm not a cheapskate (and I find your remark pretty condescending), but I am frugal. If the majority says 10% is okay, that's what I'll plan unless I experience very good (or very bad) service.