The hashtag (#), which is a hallmark of Twitter’s userbase wanting to categorize content, is rumored to become a part of Facebook’s Graph Search .

As companies have stayed private for longer, CEOs and founders have gotten savvier about letting early employees liquidate or diversify their holdings in their companies. With several of the heavily anticipated consumer IPOs savaged over the last year in public markets, later-stage companies might be more conservative in the near future about when to go public. That might be frustrating to employees, who have vested over four years.

Toronto photo-sharing startup  500px  is reporting today that both of its applications, 500px for iOS and its recent acquisition ISO500 , have been pulled from the Apple App Store due to concerns about nude photos. Combined, the apps have over 1 million downloads, 500px COO Evgeny Tchebotarev tells us. The flagship application has just under a million downloads, while ISO500 has a little over 200,000, he says.

Freelancer.com , the job outsourcing and freelance IT worker marketplace, has made another acquisition: it has bought vWorker , a job site for freelance coders and other tech professionals. Terms of the deal have not been disclosed but TechCrunch has heard from a source that it is in the region of millions of dollars

What a change a year makes. SecondMarket, which helps arrange sales for stock of privately-held companies, said three-fourths of its transactions in the last quarter were for consumer electronics companies

As promised last month,  LearnVest , a startup which recently expanded its focus from teaching women to become more financially savvy to teaching entire households to so, is now available on mobile. Today, the company is officially debuting its iOS application in the App Store, which will allow users to sign up, budget, set goals, track their cash flow and more

Amazon has confirmed it’s using LOVEFiLM, the movie rental company  it acquired at the start of 2011 , to power the video service in Kindle Fire and Kindle Fire HD tablets sold in the U.K..

If New York has The Times and San Francisco The Chronicle , then the digital world has  The Daily Dot – the first online newspaper exclusively dedicated to news about the Internet. Backed by the Los Angeles based investor Nova Spivack , the Daily Dot was founded in August 2011

Facebook stock picks up slightly after all-time low – Facebook shares closed at $21.09 today, up slightly from their all-time low earlier this week of $19.82. The stock has taken a beating since its second quarter earnings report and it was hit further with reports about false user accounts and executives leaving the company .

Coke Zero is one page leading the list of weekly gainers for the People Talking About This metric among food and beverage merchandise pages. The top 10 pages gaining People Talking About This saw increases between about 60,000 and over 200,000 engagements. We compile this list with our  PageData  tool, which tracks page growth across Facebook