Instapaper adds mail-in support

Steve Rubel points out that Instapaper just added a real killer feature:

“Earlier this week it quietly added a killer new feature. You can now email in URLs or newsletters and it will save them to your Instapaper account for perusal later. I find this invaluable. ”

I can’t actually wait to see what Marco comes up with for Instapaper on iPad. It may well be the killer application for use with it.