1) how many air owners have flash installed?
2) how does battery drain from flash compare between macbook air vs macbook pro, is one better or worse?
3) click to flash no longer works? any other ways to avoid flash?
1) Make a poll. Does it really matter though?
I do have it installed, if that helps.
2) No clue, it's probably the same thing.
3) ClicktoFlash works for me. There's also ClicktoPlugin, try that if CtF doesn't work.
It's not like it's gonna kill your battery by the way...
First of all, sites that use no flash spend the same amount of energy with or without flash installed.
Secondly, if you do visit sites with flash, use 1 of those addons/extensions I mentioned (they work, if it doesn't work for you, ask for help and it will) and you won't see a single flash unless you click on it. No battery consumed.
Thirdly, I strongly suggest safari as a browser if you are running lion. It has great gesture support, great full-screen support (it works a little better than google chrome/firefox).
Before you ask me about the difference of full-screen on different browsers, here's a little example. Whichever link you click, may that be on purpose or an annoying advertisement, safari will open it in a new tab. Google chrome won't. And if you're on full screen on chrome, it will open the advertisement BEHIND your main window, which means you need to exit fullscreen, close the ad, re-enter fullscreen. Kinda annoying.
Some people also say that safari is a memory hog, but I haven't had any problems even with 10 tabs open, and I only have 2gb of ram (2011 base macbook air model). Even if you don't have free ram, the SSD does the job for it ;-)
Anyway, I got off-topic, but the answer to your question is: Install those plugins and you'll be fine.