SAN FRANCISCO — Not everyone was breaking out the bubbly for Twitter’s market debut.  While a big group appeared to have congregated inside the company’s offices in the Mid-Market neighborhood here – over 100 people checked in using the Foursquare app alone – a small gathering of protesters stood outside early Thursday morning.  Their message: Twitter should share some of its wealth.  While the company has garnered accolades for helping to turn around the once-seedy neighborhood, the nonprofit organizations instead criticized the social network for displacing low-income residents. They pointed to a city ordinance that essentially exempted Twitter from San Francisco’s 1.5 percent payroll tax for six years.  In return, the protesters claim, Twitter has given little back, while low-income residents are forced to move further away. That has been exacerbated by the influx of other technology companies into the neighborhood.  “We’re calling in attention to how when Twitter came in, it’s had a long-term negative effect on the community,” said James Chionsini, a health care organizing director for the nonprofit Senior and Disability Action.  Mr. Chionsini acknowledged that crime has gone down in the wake of the Internet renaissance of the neighborhood, once known for high vacancies and strip clubs. And he said his compatriots are not against the technology companies per se.  But he argued that poor families and community organizations have been displaced, and the character of the neighborhood has changed for the worse. One group at Thursday’s protest displayed a coffin with “R.I.P. Affordable Housing” painted on its side.  “They’re bringing in a lot of money and stimulating growth,” Mr. Chionsini said. “But people who have lower income aren’t seeing that money.”  It was not apparent whether Twitter employees took notice. A few left the towering office building to dash to the Starbucks across the street. (To be fair, programmers generally don’t come to work at 6 a.m.)  “I don’t think they realize what’s happening,” Mr. Chionsini said, adding that a bigger protest was scheduled for noon Pacific time.  — Michael J. de la Merced
Twitter closed at $44.90 a share, 73 percent above its initial public offering price. DealBook followed the first day of trading as it unfolded.