Post sharing still limited to just Facebook and Twitter.
An update to the 6-second video sharing service Vine is adding new activity notifications and sharing intents. If you choose to have them turned on, you will now receive push notifications whenever someone likes, comments or mentions you in a Vine post. Notifications can be managed in the standard ways of choosing your ringtone and toggling whether or not to have vibrations or a notification LED for notifications. Naturally, you can turn them off completely as well.
This latest update also adds proper sharing directly to Twitter or Facebook from the app. Just hit the menu button below a Vine that you want to share, and you'll be given "Share on Twitter" and "Share on Facebook" options. Although we would prefer if Vine just used the standard Android sharing intent to let you share Vine links to any app, this is a good start.
You can grab a download or update to the latest Vine app from the Play Store link above.