Even though some people argue that Zoom is a game of no opponent information, I disagree, and think there is actually a decent amount that a lot of players overlook, so I created this thread to discuss and share ways of getting extra information and thus extra edge at Zoom:
Here are some I use
1) Average Pot and Players/Flop
You can generally tell from this exactly how nitty people are being preflop, and get a good idea as to whether people are calling cbets but not 2nd barrels. An average pot size of around 12bb suggests it often is not making it past the flop, so you should be cbetting more. A Players/Flop of less than 12% for FR indicates very nitty and prefer to 3bet less for value and more as a bluff, and be even more wary of 4bets than usual.
2) The number of tables villain is playing, this is very important. (you can see this in lobby)
If someone is playing 4 tables, they are a lot more likely to fold to a cbet than someone who is only playing 1 table. They are often going to have a tighter preflop range and very unlikely to call unless they are strong. They may make cbets routinely, but often these 4tablers will never 2barrel unless they are strong
3) Size of blindsteal
Generally 2-3bb indicates a steal with an average hand, while more than 3bb is generally a legitimate raise. This is of course specific person to person but overall it holds true. A 2 or 3bb raiser will often cbet if called, but give up on turn with nothing, making it very profitable to float these kind of opponents.
4) Take notes
I doubt many people take notes in Zoom, but its just such a good idea, as people think they are doing stuff anonymously, and knowing stuff like 4/5betting ranges (stick around after folding and you can see them for free sometimes) can allow for an easy double up with a JJ or QQ that you usually would have folded
Hopefully others can add to this 
