Another word for yes, but often used in a text message to continue the conversion just a little bit more longer. Most of the time it gives the other person a chance to continue the conversation by a question
It is also a way to say I agree with what you said
Ya and any other form of yes works
Yes doesn't work, it is just awkward
Sarah: yeah, swimming is awesome
Sarah: Hey, are you going to that party tomorrow at brad's house
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