[zzo38computer]

I will tell you what is my opinion of it. Do server side logging, but you should not use analytics stuff, or read what someone entered into a form without submitting, or tracking ads, or tracking data which is done entirely on the user's computer (e.g. most traditional command-line programs and GUI programs should not use any remote tracking), etc. (You can also program the server to reduce the amount of data logged for HTTP requests with a "DNT:1" header; I have made it to not log the IP address in this case, although timestamps and amount of data transfer are still logged.)