That's the first question that came to mind shortly after my Beta test of Google's new Google+ (Google Plus) social network. Of course, Facebook still reigns as king of the hill when it comes to membership — it currently boasts over 750 million "active users" — but that may not be the case much longer if the social giant falls behind in adapting new technologies.

Case in point, Mark Zuckerberg's announcement earlier this month of Facebook's new video chat feature in partnership with Skype. This new feature - which also marks a redesigned chat interface and group chats - comes in the shadow of Google +'s Hangout feature. 

While both features offer video chat, what's interesting is that only Hangout seems to allow its members to have a group video chat (10 people at a time) whereas Facebook is limited to one-on-one conversations. Facebook's "video calling" is also not currently available to the general public while Hangouts is available to everyone (who hasn't become a member... except maybe William Shatner?)

This is not to say that Facebook is dead, far from it, but it does mark a warning sign that could very well put Google+ in the lead going forward should it prove to be a popular enough in the social networking stratosphere. According to Ancestry.com founder Paul Allen, approximately 10 million users had already signed up for Google+ this time last week.

What do you think? Is this the beginning of the end for Facebook or is Google+ just another "wave' in the search engine giant's quest for social order?