"An integer overflow in the libpng library can lead to a heap-buffer overflow when decompressing certain PNG images. This leads to a crash, which may be potentially exploitable."
Regarding mouse over ads, apologies for not providing a good reading experience. Since the original link is in blue and the ad is in green, I thought it was easily distinguishable. I will look after it.
A built-in adblocker, alone doesn't ensure the top spot among browsers. If that is the case then Chrome should not have reached this place in browser market. Yeah Chrome too have an adblocker. But Chrome started to gain market share, before even getting an adblocker!
That is of not much use to the user. By blacking out the whole page, users are now forced to read about the Reddit's stand against SOPA and PIPA which people might miss if Reddit follows your suggestion. Even people ignorant about SOPA and PIPA will read this and get a clear understanding about it
Corporate users are many in number and only few is sticking with Firefox. Majority of the people is with IE, especially with IE6 (sigh). May be Asa would have said that
I disabled Javascript and the site did not crash my pc.