Twitter lights up its geolocation API: It’s here, but it only works 1) if you turn on geotagging in your account settings on Twitter.com and 2) you’re using a Twitter mobile application with the geolocation feature, like Foursquare. Both these factors will combine to make this a rather specialized use case, but as Twitter says, “These are only the beginning.”

Fox Sports launching local sites, too: Joining the ranks of ESPN and Comcast, Fox Sports is quietly rolling out a network of a dozen local/regional sports sites, like FoxSportsArizona.com. In less than a year, local sports has suddenly become an incredibly competitive field, with local media feeling the squeeze from both national players and the sports leagues themselves.

Comcast launching local sports sites: Comcast is pouring some serious cash into an effort to compete with ESPN.com in local sports. The first site, Comcast SportsNet New England, will ultimately hire 40 staffers. San Francisco, DC/Baltimore and Chicago will soon follow.

How blogging has changed in last 3 years: A new survey shows that the way users engage with blogs is shifting more to off-site experiences, thanks in part to social networks and bookmarking/voting sites. (The graph above measures engagement for top blogs.) This reminds me of that timeless quote from a college student, “If the news is that important, it will find me.” There’s a new ecosystem of content sharing, which may or may not drive referrals — a new universe of content consumption that many media companies are just beginning to understand.

A very cool way to watch a TV newscast: One of the big struggles in TV news is how to provide viewers with an easy way to find and watch specific newscast segments on the web. (“I saw it on TV around 5:30 p.m., but I can’t find it on your website….”) Here at msnbc.com, we just launched the TODAY Video Timeline on TodayShow.com, a nifty Flash experience that lets you chronologically scroll through TODAY segments labeled with the exact air times. Beyond finding a specific segment, it’s also a great way to browse the show, clicking on the clips you want to watch.

Local digital channels could be the new TV wasteland: “Do you watch any of the new local digital channels?” asks Tom Petner on TVWeek.com. “No, neither do I.” I must confess, though, I do record and occasionally watch old episodes of Magnum PI on a random digital channel in Seattle. But I can’t tell you which one. (That’s a screen grab of an episode of Sea Hunt above, via ThisTV. )