They&#x27;re going to slow down just as tablets are.  PCs have been around a <i>long</i> time in tech-time compared to tablets and modern smart phones.  Just as computers no longer need to be upgraded every couple years, tablets are no longer upgraded every year or two.  Phones are getting to that point as well with the faster CPUs and faster storage.  A mid-range phone now has the same specs as a top tier phone from a year ago.<p>As for ad-blocking on your iPhone 5, you could just install an alternate browser that supports extensio... oh, right. :(