Instapaper gets iPad refresh: more friends, more reading

Instapaper, the internet equivalent of a bookmark, has been given a top-to-toe makeover for its latest outing on the iPad. Fear not, your reading materials remain easy to read (and ad-free), but version 4 has now been smoothed over with a thick layer of tablet gloss. Navigation is all done through a bar on the left, and remains available for prodding as you read through your article selection. The upgrade also adds a subscription option for searching all your previous reads, as well as better social skills, with the ability to pick up and store articles and posts shared by your Twitter buddies -- ensuring that you'll probably never run out of reading material again.