If you use Instapaper and install the "Read Later" bookmarklet on iOS (it's just a bookmarklet in Safari), then you'll be able to add articles to Instapaper fro

If you use Instapaper and install the "Read Later" bookmarklet on iOS (it's just a bookmarklet in Safari), then you'll be able to add articles to Instapaper from Safari, and you'll have those articles both on the Instapaper iOS app and the Kindle with Instapaper's Kindle sync.