NXP Semiconductors ( NAS: NXPI ) will also be part of the index, thanks to its leadership in the rapidly growing near-field communications industry that many believe will be the key component of enabling smartphones to become mobile payment devices. In addition, Groupon ( NAS: GRPN ) made the list, despite having plunged 80% since its opening-day price not quite a year ago. Meanwhile, several companies got booted out to make room for Facebook and its peers. Interestingly, microblogging provider SINA ( NAS: SINA ) was among the casualties, with its shares having lost more than half their value since early 2011. With Facebook mulling an entry into the Chinese market at some point if it can satisfy regulators there, it would arguably be poetic justice for Facebook to give SINA the fatal blow to its Nasdaq-100 hopes. The sad thing about the Nasdaq move is that after a 50% drop in the stock, now might actually have been the perfect time for Facebook to get added to major indexes.