data deluge

general

time since load (s)
0
time visible (s)
0
browser width
0
browser height
0
browser agent
date
is it christmas?
NO
visits to page
1
language
referrer
load time (ms)
pages in history
plugins installed
0

mouse

clicks
0
doubleclicks
0
clicks per second
0
longest click (ms)
0
cursor x position
0
cursor y position
0
mouse movement speed
0
px moved
0
characters selected
0

scrolling

px scrolled
0
scroll rate
0
scroll position
0

keyboard

keypresses
0
distinct keys
0
keys per second
0

social

tweets
plus ones
likes

... on just one webpage

The data you generate can be used for good, by improving the products you use based on how exactly you use them. It can also be used for more nefarious purposes, such as tracking you and correlating your activity across the web based on the bits of entropy that identify you.

Make sure you're trusting the right people