Have you said thank you to Foursquare today?

You may want to.

Foursquare has saved up some valuable information over the last three years and now, with a new redesign of its mobile app, it’s using that information to help users discover your business.

And speaking of information, if you’re a LinkedIn user you may want to change your password. The networking site was recently the target of hackers who gained access to 6.5 million user passwords..

Read about these stories and more in this week’s news roundup. 

1. New facelift could change the way you think of Foursquare

The most recent update to the Foursquare mobile app now refers users to people, businesses, and deals in their area. The idea is to connect the more than 20 million Foursquare users to new businesses by matching their check-in histories with those of other people, both familiar and unfamiliar to them.

Bottom Line: Foursquare is shifting away from the “check-in” business and into the “discovery-business.” With these new features, Foursquare becomes a resource for users looking to find local deals and discover new businesses. With more than 2 billion check-ins worldwide, they are in a good position to do just that.

If you haven’t claimed your business on Foursquare, now might be a good time to do it.

2. Hackers compromise 6.5 million LinkedIn passwords

LinkedIn confirmed reports of a breach in security on Wednesday that compromised as many as 6.5 million user accounts. LinkedIn has since locked all of the hacked accounts and sent out emails to users with information about how to change their passwords and protect their privacy.

Bottom Line: Online privacy and security need to be a major priority for both businesses and individuals. If you think that your information may be at risk, consider taking these steps which LinkedIn outlined on their blog following the incident.

3. Twitter now seeing 400 million tweets per day

After announcing that users were sending 340 million tweets per day, just three months ago, Twitter CEO Dick Costolo announced this week that the site is now seeing 400 million daily tweets. If that 18% increase in just three months is not enough, Twitter also announced that for the first time mobile advertising has surpassed non-mobile revenue.

Bottom Line: Twitter’s continued growth in the mobile market is resulting in an increase in social engagement and advertising activity. For Twitter, this could mean an answer to the question of how to generate profits, and for you, it could mean more opportunities to generate more engagement for your brand on Twitter.

4. Colleges and universities see social success with social campaigns

More and more institutions of higher learning are embracing social media as a way to attract new students and connect with current students. This week, Best Colleges Online released a list of 20 social campaigns being run at colleges and universities across the county. With Facebook, Twitter, LinkedIn, or Google+, they are connecting with the next generation of students and building a more social campus experience.

Bottom Line: These colleges and universities provide an effective example of how to run a social campaign. They have each identified a need or a service that they can provide, thought of how social media could be applied to answer it, and developed a strategy for their social media efforts.

5. Constant Contact is named to the OTA 2012 Online Trust Honor Roll

The OnlineTrust Alliance, a non-profit committed to protecting online privacy on the global internet ecosystem, has named Constant Contact to their 2012 Online Trust Honor Roll. The study looked at:

“the adoption of key security and privacy initiatives, providing benchmark reporting and comparisons between key industry sectors including leading internet retails, FDIC Top 100 Banks, and social media networking site.”

Bottom Line: Craig Spiezle, executive director and president of the OTA explained exactly what this recognition means for Constant Contact.  “Being a member of the 2012 OTA Online Trust Honor Roll means Constant Contact has demonstrated exceptional leadership and commitment towards online safety, to enhancing the vitality of the internet, and, most importantly, to consumer trust.”

What news topics caught your eye this week? Let us know below!