A: Hi, thanks for the interest!
1) Our data is unsampled and extremely accurate, filtering out spammy sources and bots which would create big problems in server side tracking. Obviously every solution is never perfect, but based on our customers feedbacks and our comparative analyses, we’re pretty accurate at tracking real users.
2) If you use UTMs, the tracking is almost perfect. Otherwise, we can infer the traffic source via document.referrer, which is not always perfectly declared by those platforms. So if you’re able to go with UTMs, that’s perfect.
3) I would say we can do most of those insights. We are going to release soon additional e-commerce functionalities, like revenue tracking and conversion tracking, so I think these will give you a good added value.