—Piczo Goes Mobile: Teen social networking site Piczo will launch its services on mobile devices in January, the Guardian reports. The site will allow users to post photos, videos and messages from their phones to their profile pages. San Francisco-based Piczo is still struggling to put a price on the service and has not decided whether it will be ad-funded, subscription-based, or pay-per-use. The company saw it as its “biggest barrier”, but were afraid of making it too expensive for their target audience of 13 to 16 year olds. Piczo claims to have 12.5 million unique visitors a month, with 3.5 million coming from the UK. The site is more popular in Europe than in the US, and is the fourth largest UK networking site according to comScore.

—Itsmy Hits 300,000: Ad-funded mobile social networking site Itsmy.com has signed on 300,000 members in the UK since its launch last year. The site, owned by German mobile social networking site Gofresh believes British members are “flocking” to the mobile site, as 49 percent of them cannot access social networks from their office computers (via Mobile Entertainment).

—WeeWorld and Vringo: Social network WeeWorld has signed a deal to put its avatars on Vringo‘s service. Since WeeWorld lets people create avatars to represent them on MSN and mobiles (through operators) and Vringo lets people assign video ringtones to represent themselves, this deal is a no-brainer. (release)

—SMS Flirting Through LimeJuice: Start-up Hypehn8 has been beta testing its mobile social network LimeJuice in San Francisco, reports TechCrunch. The service lets users flirt with one another through SMS, which bypasses the problem of having to download a Java application or surf to a mobile web page to meet others. They have been currently sponsoring events to drum up interest. Some stats they revealed: 40-50 people participate per event, spending around 1.5 hours on the service over the course of the event. They send an average of ten text messages per person, though some people send up to 180. At one event, 2,500 messages were sent.