“Save to Foursquare” buttons now appear alongside web content at New York magazine, *Time* Out, and a variety of other publishers, allowing users to send places they want to go to their phones and get alerted when they’re in the vicinity.

Investors are not the only ones who see Groupon (NSDQ: GRPN) as a money maker these days. In a lawsuit filed today, a California company is claiming the daily-deal site’s mobile shopping apps infringe its location technology.

Foursquare probably can’t grow forever on the backs of those who like sharing their location with their friends, and Apple’s new iOS 5 has given it a way to turn Foursquare into more of a notification service than a broadcasting service. Radar, unveiled Wednesday, lets Foursquare users receive notifications when…

Today marks the launch of EchoEcho, yet another app that lets smartphone users keep track of each other. The twist here is that the Google-backed venture believes it has solved many of the privacy concerns that scare people away from geosocial technology.

When Facebook announced that it would be folding Places check-ins into status updates, some took it as a sign that the company was bowing to Foursquare as the dominant “check-in” service in mobile. But one app developer tells us that based on the activity on his apps, this is far…

Facebook has been sizing up the mobile world with hungry eyes for a while now—more than one-third of the social network’s 750-million-plus users are already accessing the site via mobile devices—but this week has seen some hiccups that show it’s not always going to be an easy win for it.…

Sometimes what’s important is what you’re doing, not where you are (I should write Hallmark cards, right?). If you’re going to the movies, for instance, the most relevant bit of info is probably that you’re seeing Crazy, Stupid, Love, not that you’re at the AMC Loews Lincoln Square 13. Recognizing…

The controversy about location-tracking on mobile devices, and the subsequent emphasis on location-based services in mobile advertising, may not be as important longer-term as previously thought. According to a new survey, it’s not location-relevant advertising that is most valued by mobile consumers; it’s mobile ads that are personalized to a…

Klout score is not yet an easily recognizable metric compared to, say, one’s number of Twitter followers or Facebook friends. But the company, which aims to measure users’ online influence (and which recently attracted attention for giving away Spotify accounts), wants that score to be more meaningful than either. Klout…

I will warn you on this one. I have tried to be a location-based services user but I lose interest real quickly. My erratic check-ins at restaurants or sporting events are more a result of me saying “I guess I could check in” or my wife checking in thus making…

Foursquare is rapidly expanding its partnerships in the daily deal space. Starting today, Foursquare users will find Groupon’s daily and real-time deals in their apps.

“Showing your phone to redeem a deal sucks,” said Tristan Walker, Foursquare’s director of business development, today at BIA/Kelsey’s Deals 3D conference. “We wanted to completely fix it and make it completely seamless, frictionless and magical.” Foursquare, Yelp and Shopkick are rolling out new mobile tools and launching new partnerships…

Forget the check-in, and show me the check: Foursquare has received new funding of $50 million which reportedly values the company at an eyebrow-raising $600 million. The location-services company will now look to hire more engineers and probably a business-development executive or two as it looks for a way to…

Now there are two things American Express hopes you don’t leave home without: your card and your smartphone. The company has finalized a deal with Foursquare to offer users cash-back discounts at participating retailers when they check into a venue and spend money using their American Express cards.

Geo-location service Foursquare has netted content deals with several major news publishers last year, such as the NYT and Financial Times but those were mostly for promotional purchases. The company has struck a new partnership with hyperlocal news provider Examiner.com, which will add reviews to Foursquare users’ mobile feeds in…

You know you’ve made it as a technology service when Hollywood comes calling in hopes of developing a TV show. But this new deal between Foursquare and unscripted-TV producer Endemol USA sounds like there’s real potential.

A weekly look at a story that is defining the news. This week’s news was dominated by the announcement that Facebook was moving into the check-in turf that had previously been the sole domain of several startups with fewer than 10 million users—most notably, Foursquare. Facebook’s service, called Places, lets…

Are the major search engines about to give their badge of approval to Foursquare? CEO Dennis Crowley tells The Telegraph that his company is talking to Google (NSDQ: GOOG), Yahoo (NSDQ: YHOO) and Microsoft (NSDQ: MSFT) about some sort of data sharing deal. All three major search engines reached deals…

About that $20 million Foursquare raised last month ... $4.6 million of the total went to co-founders Dennis Crowley and Naveen Selvadurai, according to an SEC filing out today (via Business Insider). A spokeswoman tells us the two men sold “a small portion of their personal equity to allow our…