Now, as of checking at (8:45 AM , Manila Time), the invite mechanism is apparently working again. For those who would like to be invited, just put a comment below. Please provide your email as well.
As mentioned, Google Plus (Google+ or G+) is Google's new take on the social networking arena. It core features are the following:
Circles. You can sort out your friends to different groups so as to enable you to easily limit the information you share to certain people. This is a great step with regards to privacy.
Sparks. It is simply a feed of items with regards to a topic of your interest. The goal of Sparks is to have something to spark the conversation and promote sharing of information.
Hangouts. Hangouts is a video conferencing capable of allowing 10 people to chat face-to-face.
Mobile. Google+ takes your mobile experience to a more social level. Features such as Huddle (group chat) and Instant Upload, lets you share information wherever and whenever you want.