To the first question: Yes. An example would be travel sites and shopping sites getting way more use during holidays. A big one is always December: end of the y

To the first question: Yes. An example would be travel sites and shopping sites getting way more use during holidays. A big one is always December: end of the year holidays mess with usage metrics a ton given how many people take off work or spend time away from their computers, to the point that most companies I've worked at tend to ignore data from that month or try to be very careful about only comparing it to data from December in other years.