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

  • Facebook Accounts For 25% of Page Views in U.S.
  • Startup Allows You To Track In-Person Twitter Interactions
  • Yelp Gets Into the Check-in Offer Game
  • Facebook Alternative Diaspora Goes Private Alpha

Facebook Accounts For 25% of Page Views in U.S.

There is a constant battle going on in the United States by Internet content companies who want to be the online destination. There are huge incentives for being a top web property because advertising audiences and higher rates come to those online properties. Google, Facebook, MSN and Yahoo seem to be jostling in position, but HitWise just released numbers that will shake up the competition.

Facebook now accounts for 1 of 4 page views in the United States. As a result, it has now passed Google in visits. Facebook's traffic increased 60% over the same time last year. Additionally, last week, Facebook accounted for 1 in 10 website visits in United States. In second place is Google's YouTube property.

It seems every few weeks there's a new statistic or related story that shows Facebook's rising dominance.  This 1 in 4 page view statistic shows that Facebook is a very sticky site that generates a vast amount of views for its 500 million users.

Startup Allows You To Track In-Person Twitter Interactions

Tools such as Twitter and LinkedIn are great for making connections with people online you otherwise wouldn't meet. However, how do you make sure you get to meet and interact with importuned members of your online network as well? New startup Hashable aims to help you document real-world connections and professional contacts.

By using hashtags, a tool for giving a common element to each conversation, Hashable allows you to use the system to document all types of exchanges or meetings with hashtags such as #justmet, #lunch, #dinner, #coffee.  The idea is that some people already share their coffee meetings and lunch on Twitter, so why not build a tool where folks can track them for later use.

Online relationship management tools such as Highrise already track all modes of touches and contacts with folks you know, but Hashable brings a unique approach. Hashable may not have a concrete usage or business model, but the idea should be used be utilized by other tools.