Speed reading on iPad.

A major element to fast reading is using a pointer (such as your
finger or a pen) to track the text as you read. I don't want to press
a pen against my iPad; but sliding your finger along in most reading
devices turns a page. I wish these apps (kindle etc) would allow me to
select swipe vertical or swipe horizontal to read, so I could do this;
similarly with Instapaper - if you swipe sideways it repeatedly asks
you if you want to turn on pagination, even if you've told it no
repeatedly 100 times. Should be a relatively simple fix.