Here's a neat tip I came across on SheGeeks.net: You can post your Stumbles to Twitter right from StumbleUpon.
- Join the StumbleUpon Beta Group
- Thumbs up and add a review to a page. Your review is what will be Tweeted, so keep it short and sweet.
- Under the green "Add Review" button, you'll see "syndication options." Click that and then click "post to twitter."
I have been pushing my Stumbles to Twitter using TwitterFeed, but Tweeting right from StumbleUpon posts faster to your Twitter account and is slightly more efficient. One caveat, it seems you can't Tweet an original Stumble — the method only works if you add a review for a page that's already been Stumbled. This is a beta feature, however, so I'll bet StumbleUpon fixes this soon.

I love this. Thanks for sharing. i am going to head there now to sign up and start using this fun new feature.