Facebook puts its social network to life-saving purposes, with a new tool that allows people to share their organ donor status.

OOD DAY FOR:

Oversharing
Facebook introduces a feature that allows users to identify themselves as organ donors, in the hopes of creating a growing network that could save lives. [Newser]

Trying to land behind bars
A founder of the Occupy movement says he expects hundreds of arrests during May Day protests, forecasting that the arrests will "directly challenge power" and keep Occupy alive. [Business Insider]

Hillary Clinton's cool factor
Actor Jason Segel says he wants to work with Hillary Clinton on a movie; Clinton denies him with a humorous rejection letter. [BuzzFeed]

BAD DAY FOR:

Safe cycling
A new survey finds that four out of five bike-share riders don't wear a helmet. [GOOD] 

Panda privacy
The National Zoo in Washington, D.C., live-tweets its attempt to artificially inseminate a 13-year-old giant panda. [TIME]

Cutting the cord
Rumors swirl that online television streaming service Hulu may require its users to subscribe to cable TV to continue using Hulu. [Consumerist]

For more winners and losers see: Good day, bad day: April 30, 2012