It is nice to have the text immediately readable for when you just
want the first paragraph, or will read the whole article. But for long
articles that you only want to read a little of, it can be useful to
look at the shape of the text - rapidly scrolling through to see how
much information is included where, or looking for pictures. The
mobile site doesn't let you do this easily (not that it's that hard to
switch to the regular site for this). Perhaps the show buttons could
include a count of the number of words in the section?
Sam Newbold