Social media moves so fast, it's hard to keep up. Here are the week's top stories in scan-friendly format:

  • Facebook Accessed by 250 Million Every Day
  • Location Will Rule This Holiday Shopping Season
  • Twitter Analytics For The Every Day Twitter-er
  • Facebook Launches Feature That Shows What Friends Discuss

Facebook Accessed by 250 Million Every Day

At the Web 2.0 Summit yesterday, Facebook CEO Mark Zuckerberg spoke and summarized usage within the fast growing Facebook universe. The company now has more than half a trillion users and this growth has been augmented greatly by usage from mobile devices.

Zuckerberg said that 250 million users log into Facebook on a daily basis and that the company's recently launched "Groups" feature has been adopted very quickly. Along with Photos, Groups and Messages, Facebook continues to build sticky tools that users clamor for so they log in to the social utility more and more.

With a massive growing audience, Facebook is becoming a giant in online social networking. The next targets on Facebook's roadmap include games, music, TV and News verticals. If Facebook keeps growing at this pace, it is possible that the company will rule 'social' much in the way Google rules search today.

Location Will Rule This Holiday Shopping Season

According to a new study by JiWire, location based services will be utilized heavily as shoppers start to make their way into stores this November and December. That is, a large number of shoppers plan to take advantage of location-based services and promotions in the coming weeks.

According to the study, 89% of people will use a location based service for holiday planning. Additionally, 37% will used location centric service more than usual. In many cases, folks will use Google Maps to plan out a shopping trip or find a destination. Also, users plan to look up descriptions and reviews of products and check inventory at nearby stores.

With the growing number of smartphones sold each day, these hand held computers will enable holiday shoppers to shop smarter. Forward thinking merchants, such as Target, will offer instant discounts to those who check in. Now, with Facebook supporting check-in in addition to Foursquare and Gowalla, more Internet users are accustomed to the idea of "Checking-in".

Twitter Analytics For The Every Day Twitter-er

Much in the same way bloggers like to scour over web analytics to figure out which posts are most influential and how folks find their blog posts online, some Twitter users wonder how their tweets rank in terms of influence and usefulness. A new startup called Crowdbooster aims to give some analysis and intelligence to your tweets in a user-friendly colorful way.

By analyzing your tweets on an individual basis, it produces some interesting and beautiful charts that allow you to see how your tweets were consumed and whether they were re-tweeted. Also, one unique feature is that Crowdbooster shows you the best times to tweet, based on your friends' activity at different times of the day and when those Twitter followers are most likely to be online.

There have been Twitter analytic tools in the past, but Crowdbooster provides interesting and actionable data for individuals and brands who want their Twitter activity to be useful. For individuals, Crowdbooster is free and for businesses, access is US$ 200 per month.

Facebook Launches Feature That Shows What Friends Discuss

Facebook is very good at telling us what our friends are up to. Through status updates, events and pictures, we can easily keep track of our contacts and stay engaged in their lives. However, have you ever wondered what your friends are talking about on the social networking site?

Facebook figures that this curiosity does strike their users, so the company is building a feature called Mentions that combines updates on similar topics into your Facebook News Feed. For example, if two of your friends are discussing the Indonesian volcano news items and perhaps posting links to news stories on this subject, in the future, you will see a post in your News Feed summarizing this activity.

This feature is yet another way Facebook is trying to capture and present conversation items amongst your otherwise noisy news feed. Is this an interesting feature that excited you -- or is it annoying?  Please sound off in the comments below.