After Facebook went public, in 2008 it faced some issues with its requirement for "real names" that seem quite similar to the ones currently faced by Google+. Take the trouble Elmo Keep (that is her real name) had:
Banned for keeps on Facebook for odd name. Or the case of V Addeman (also a legal name):
Facebook rejects a man named V. There were many others.
Did complaints about this ever reach the level that they have for Google+?I don't know, but I can't find the huge outcry about it in the archives of public conversation that currently exists for Google's actions.
There are some obvious differences in the two situations of course. Facebook started out requiring real names (enforced through requiring a valid college e-mail address initially), and the culture of no pseudonyms meshed with rather than conflicted with its initial userbase. The norm was well established and accepted among the established userbase when Facebook went public-access. This is a far cry from Google, who have tended to present themselves as sharing the cultural ideals of the early community of the Internet. In that culture pseudonyms weren't just a routine part of online life, but the preferred method of protecting personal privacy while still being able to effectively participate in public communication. Google's situation feels like a betrayal, which Facebook's position, while still problematic, never did.
Further, a mistake Google made in their handling that Facebook simply couldn't make is to ban the entire Google account of an alleged violator of the "Real Names" Google+ policy. Facebook only offered social networking. Google offered so much more, and their policy was impacting much more than their social networking site. Worse, it was affecting Google services in which a "real name" wasn't a requirement. Using Google's services have been described by some as essential plumbing of the Internet, which, it is argued, makes their situation different to Facebook. However, it should be mentioned here that according to Zuckerberg's own claims (The Facebook Effect, p144, 159), he intends Facebook to be a "utility", the essential plumbing for Internet communication just like the way the other services have been historically, only better. So this distinction is less of a distinction than it first appears.
Facebook is also rather lacklustre in enforcing their policy. I need only traverse my "friends of friends" on Facebook a little way to find obvious fake names and identities, including a profile that is quite literally the profile of a dog (it's set up by the dog's owners, but everything, including the status updates, is written as if it was the dog itself maintaining the profile).
And of course, the other difference is Twitter. Many of the people complaining about Google+ are also avid Twitter users, which is an effective and popular platform that explicitly doesn't have a "Real Names" policy. For whatever reason - insufficient overlap between Facebook and Twitter users perhaps, or insufficient uptake of Twitter to reach the necessary critical mass in 2008 - the Facebook situation wasn't as avidly discussed and circulated among the Twitter public (and thereby through the broader Internet) as #nymwars has been (or so it seems to me - I could be wrong about this).
So the discussion of #nymwars has focused on Google+ and demands that they withdraw their "Real Names" policy. Yet for all these distinctions between the two, isn't the current discussion of #nymwars giving Facebook way too much of a free pass? Sure, there's some writings that say "Google and Facebook" when discussing anti-pseudonym sentiment generally, but nothing specifically directed at Facebook that I can see. If Google+ should be facing criticism and pressure for its identity policies, why shouldn't Facebook be facing the same amount, not just as an add-on to complaints about Google+?
Facebook has done the same stupid things as Google+ previously and with much less public criticism, they have the same obstinate refusal to countenance pseudonyms as useful tools for protecting privacy, so why should they avoid the level of criticism and pressure currently being applied to Google just because they're not fighting for "Real Names" very publicly right now? Facebook staff still believe in "radical transparency", and it's unlikely they'll just stop believing in it anytime soon