Since I see so many people on the internet mis-using their there's, I thought i'd help out and teach at least my fellow diaper peoples how to use all four of them effectivley.
Here are all the "There's" used in sentences.
THERE'S some people over THERE, and THEY'RE all having fun in THEIR diapers.
THEIR diapers smell so bad, THEY'RE moving the garbage can over THERE where THERE'S less people.
THERE'S no possible way I could use all of the "THERE'S" in another sentence, Unless of course I got a couple of THEIR commas, but THEY'RE running out fast so I have to get THERE early and get them before THEY'RE gone.
Maybe that could be a little way to remember. As you can see (THEY'RE) is what you use when you are refering to people. (THERE) is what you would use if you were refering to a place. And (THEIR) is refering to something that people own, (like the diapers on their butts).
Hope this helps, I'm just tired of seeing them used the wrong way all the time. I sometimes feel like i'm the only one who payed attention in my English class. You have to capitalize English too, because it's a language or some reason...