Experience points are still necessary, but instead of being general experience, they are specific for each skill. They may be called something different, but the abstraction is still there.
Betrayal at Krondor had no experience points. Every time you used a skill you had a small (possibly random) chance of getting better at it. This chance could be made bigger by making the character "concentrate" on specific skills.
What kind of pages are you browsing if having protection against those attacks is necessary? Assuming you're not constantly going to unknown porn and warez sites, is there really much of a risk?
I used it on my old computer, but it dropped the ball on a few files I really needed to print (and get right). As a result, I haven't bothered installing Foxit on my current computer yet, and as Adobe Reader isn't bloated enough to have any negative effects on it, I might not.
The problems were with a form written in Japanese (characters displayed right, but the text bled into the margins) and some government forms that had lots of interactive crap.
What good is a ticket to the good life, if you can't find the entrance?