Sure you know the difference between 好的hǎode (just normal answer, like OK), 好吧 hǎoba (when you are not satisfied with something, but you cannot do something with it, and you only can accept this situation) and 好啦 hǎola (the answer, when you are happy or excited, when you feel some positive emotions).
But do you know what does 好滴mean? Nowadays, people mostly young people use this answer a lot, and not just in the Internet, in life, as well. The meaning very similar to 好啦, but more informal and cute way to say it. Just try to pronounce it. 好的 sounds absolutely plain, but when you pronounce 好滴, it really sounds cute.