The latest update to Pushbullet has recently been updated so SMS notifications that are mirrored on your desktop can actually let you reply to the message. Just click in the notification, type on your luxuriously huge desktop keyboard, hit enter, and away it goes. This feature was enabled for a few select partner apps before, but now it should work across the board. Another recent update allowed for a shared clipboard, so you could copy text on one device and paste in another.
For those unfamiliar. Pushbullet is a lightweight application which sends all manner of push notifications to your other devices or those of friends. Paired with a Chrome extension, Pushbullet can mirror all of your Android device's notifications on your computer, and even lets you reply directly to text messages without having to use your phone. Snippets of text, website links, images, addresses, files, and lists are the kinds of content currently supported by Pushbullet. Pushes can be sent directly through the system-wide share menu to one or all of the destinations hooked up to your account, while received pushes can also be in turn shared out through other channels available on your device. A full history of pushes, both sent and recieved, are accessible through your device and the web.
This update to Pushbullet is hugely helpful, and with any luck, the functionality will spread to other messaging applications soon. Any avid Pushbullet users out there right now? Any features you'd like to see implemented?