In a long expected move StumbleUpon have announced that it has joined eBay:
StumbleUpon has officially joined eBay. We’re excited about this, and we hope you are too.
Looking to the future, we think that joining eBay is the right thing to do to help us to grow StumbleUpon to its full potential. We think eBay is a great fit for us because eBay and StumbleUpon share similar approaches – we’re both driven by our community of users, and we are both dedicated to connecting people.
We also want you to know that not much will change around here. We’ll be running StumbleUpon separately within eBay Inc., and we’ll still be focused on developing features based on your feedback.
Thanks for all your support. Keep stumbling!