EditorialGuy - 7:11 am on Sep 30, 2013 (gmt 0)
Actually, Wikipedia works pretty well on a smart phone.
Our own two-column site (text on left, ads and such on right) looks small but is still readable in vertical format on an iPhone. It looks great on a Nexus 4--no readability problems at all, even for middle-aged eyes. If all smartphones had screens of 4 inches or larger, I might not bother with mobile pages.