SENDtoREADER is a new web app that instantly sends any web pages you're viewing to your Amazon Kindle ereader for future reference. The service works much like previously mentioned Chrome to Phone, and once you're registered you get a bookmarklet that you can click at any time to send the currently loaded page to your Kindle.
The tool is ideal for long posts that you'd rather read on an e-ink screen, or take with you when you leave the office. SENDtoREADER also keeps track of all of the URLs you've sent to your Kindle through the app, and removes ads, polls and other distracting content so you can focus on the article and the embedded images. The developer behind SENDtoREADER also offers a Firefox extension that gives you the same one-click features that the bookmarklet does, and is working on a Chrome and Safari add-on as well.