Give it some time Im sure browser based will show up.
It probably won't be soon. The last browser-based bug was in August last year.
Took Apple weeks to issue a patch, and the hackers only hours to break it.
I wouldn't call a buggy tethered jailbreak that doesn't work on an iPad 2 and is based on the previous exploit from Pwnage Tool, a win.
Funny how software holes are so easy to find, makes you wonder why software companies don't try to hack their products themselves to discover bugs before it goes out. They want to save a couple of bucks, I guess.
What do you call easy ? The iPad 2 wasn't jailbreaked until recently. In the end, software that is made by humans, can be hacked by humans. There is no sensible amount of money that would eliminate all bugs without making every device a lot more expensive.
Don't forget though, the PDF exploit can be used for good or bad.