WP Touch have a page on using wp-super-cache which is behind a paywall. They just tell you to post all of these user agents in the rejected agents box, delete the cache and limp along:
iphone
ipod
ipad
pre
pixi
iemobile
aspen
incognito
webmate
android
dream
cupcake
froyo
blackberry9500
blackberry9520
blackberry9530
blackberry9550
blackberry 9800
blackberry 9780
blackberry 9850
blackberry 9860
webos
s8000
bada
googlebot-mobile
adsbot-googleThat's a copout if you ask me - it works fine using the workaround above for caching iPhone pages, there just needs to be a separate group for the iPad because it uses a different theme.
Looking into the future (well, now because it was just released) there are iOS6 variations as well. My point here is that the groups of user-agents needs to be an easy thing to configure. I didn't come to WordPress to be a WordPress coder, I came to WordPress to write content. Making it easy to configure is your job, not mine. It's all well and good to have a top-notch caching plugin (and wpSC is) but if it is a pig to use then it is of very little value. If I can't configure it I will dump it.</ rant>
Sorry about the rant - I just wish the last step was there - you've written a great infrastructure then stopped short of implementing it in a usable manner.
It is a great plugin, btw - I have been using it for years on my $100 /yr host and it really does speed my page loads up tremendously. Compare...
With: http://www.webpagetest.org/result/120912_DP_M9A/
Without: http://www.webpagetest.org/result/120918_GW_R09/
It works brilliantly, when it works.