A viral video, trending topic, Twitter hashtag and free app of the day.
Viral video: James Cameron dives to Earth's deepest spot
Free app of the day: RunKeeper, from Nike
Now that the weather is warming, this app for the iPhone and Android is great for runners and joggers embracing the outdoors. It uses your phone's GPS capabiltiies to track your route, pace and calories burned. You can share your map online and add your treadmill runs manually.
Trending topic: 'Mad Men'
"Mad Men" is trending today because after an 18-month hiatus, the fifth season of the Emmy-award winning TV series premiered Sunday. Catch up on past seasons and episodes at www.amctv.com/shows/mad-men.
Hot hashtag: #TebowTakesManhattan
#TebowTakesManhattan is trending on Twitter because Tim Tebow was officially traded from the Denver Broncos to the New York Jets Sunday. Jets owner Woody Johnson told ESPN that the trade was not based on Tebow's off-field popularity. He also said Mark Sanchez remains the team's starting quarterback.