While two of the new rules approved by NFL team owners last week slipped through without major criticism, players didn't hold back in using Twitter to express their disapproval at the third, the controversial crown-of-the-helmet rule.

adioso help you plan your AFL Flights

Is your AFL side playing interstate soon? Adioso lets you follow your AFL team anywhere by keeping an eye on the cheapest flights for those interstate trips (right). 

Twitter utilises March Madness to introduce 15-second ‘instant replays' of NCAA game highlights. Cue a significant door opening for the platform's future in video advertising.

San Francisco 49ers fans won't feel frustrated by patchy internet connection at home games again. The team's new stadium will serve the Wi-Fi needs of 68,000 patrons simultaneously.

‘We have no choice but to get more social, more mobile, more personal and more inclusive.' Georgetown University professor of sports management Marty Conway explains how we can hold the attention of generation HD.

Auckland Blues use Tine to profile social media content for fans new to social mediaThe Auckland Blues use Tint to showcase social media activity (right). A brilliant tool to help keep fans up to date and engaged.  We installed the Tint for the Blues.

Facebook's plan to incorporate Twitter's most iconic marker, the hashtag, as a way to group conversations and give users more reason to stay logged in.

The NFL has joined with GE and Under Armour in a four-year, $60M brain injury study. They'll be looking at new ways to diagnose brain trauma and develop new ideas for helmets and other safety equipment.

A great initiative from The Fifth Army, fighting depression, bullying and homophobia. The more informed you are, the better equipped you are to handle these issues.

The usual suspects (LeBron, Federer, Manning, Kobe & Phelps) dominate Bloomberg Sports list of the 100 Most Powerful Athletes in 2013 based on ranking within their sport, endorsements and social media presence.

 What stories did we miss?  Please let us know in the comments?