Street Fight Daily: 03.30.11

A roundup of today’s big stories in hyperlocal media, technology, advertising and startups.

Are expiration dates on Groupon deals illegal? Groupon was sued eight times in all of 2010 — but in 2011, that pace has increased. It’s been sued in federal court 12 times this year. (PaidContent)

CBS Local Digital Media and CityGrid Media have partnered on an advertising/listings initiative targeting local businesses that want to get broad exposure to online and mobile consumers across the country. (Broadcasting & Cable)

How to start your own local news site. Tips from a Berkeleyside co-founder. (10,000 Words)

Could Groupon President Rob Solomon’s departure be a sign of an impending IPO? Kris Ashton speculates that he could be vacating his spot to make room for a team member from whatever company takes them public. (Daily Deal Media)

Valpak, known for its coupon-stuffed blue envelopes, has launched an augmented reality app that identifies local deals when a consumer points his or her camera phone in the direction of nearby businesses. Coupons offered by merchants in a range from 5 feet to 20 miles away pop up on the app. (Mashable)

Jim Brady’s “Project Thunderdome” at Journal Register is an attempt to take the company’s current collective of media properties — community newspapers joined at the top by a corporate brand — into an interwoven network. (Nieman Journalism Lab)

Bluebrain, two experimental musicians based out of D.C., have created a location-based music album that actually syncs with the sights the National Mall in D.C. They are planning similar location-based music apps for other places around the country.  (Time/Techland)