"An issue that often pops up for mobile browsers is that text on the website may be too small to read properly. Where the Android Browser employs a text reflow algorithm to clarify the situation, Chrome for Android features a technique which we’ve called Font Boosting. It uses an algorithm to increase font sizes when necessary, aiming to make the text readable regardless of the zoom level."
(from http://peter.sh/2012/02/bringing-google-chrome-to-android)
I actually really like the idea of adjusting text size like this, but the particular implementations of this idea may be less than ideal. I'll have to play around with it when I get the chance and see what it's like.
on mobile.. your finger takes like 50 pixels; so yeah.
Also, one of the other features is a zoom window when you try and click on small link targets that are close together. Not tried it here yet but it worked beautifully on the similar up/down vote arrows on Reddit. (image showing it in action: http://i.imgur.com/UpWKF.jpg)