Neustar is one of a handful of domain industry publicly traded companies (stock symbol NSR on the NYSE), and representatives from Neustar rang the opening bell at the New York Stock Exchange this morning to open the trading day. The focus of the event was on the new .NYC domain names, and representatives from the Office of the Mayor of New York City also participated in the bell ringing.
I embedded the video of the NYSE opening bell ceremony, so you can see how .NYC was promoted at the New York Stock Exchange. Video of the opening bell is generally carried on the financial news networks, and it is often followed by interviews with some of the participants. I am not sure if that happened in this case, but ringing the opening bell gives good exposure to the companies who participated.