Plusisms – words that imply something to do with Google+. Also a common medical disorder as in “if you don’t eat better, there’s a good chance you’ll have a plusism…”
Circle Me! – like Friend Me on Facebook or Follow Me on Twitter, but less creepy. Think of it as a group hug.
Circles – categories for organizing your social network. See: Levels of Hell, Dante
Comment – respond to a post with your own thoughts to show people how clever you are, or dispute their claims that you are not as clever as you are.
Comments – a list of responses to a post added by various Plussers. Also, a contest conducted by posters to see who can fill up your entire stream with 60 or more comments.
Disable comments – prevent Plussers from adding comments to a post. Use this if you’re not a big fan of contests.
Extended Circles – the circles of people who are in your circles. Basically like a huge gathering of several family reunions. Feel free to crash them all.
Games button – Google’s latest deterrent for conversations and other social interactions.
Games in Google+ – The Devil. See above.
Google+ – Google Plus, Google’s social networking project. Duh.
Hangout – an online gathering via video conferencing technology. Usually plagued by assorted bugs preventing from people actually interacting with each other.
Hangouts on Air – special video conferencing gathering that people can broadcast live for the five people who are interested in watching it on YouTube. note: Not to be confused with Hangouts on Ice
Notifications – updates you receive on other Plussers activity. Also known as surveillance. Also see: stalking
Photos button – displays a gallery of photos from people in your circles, most of which are annoying “LOLcat” images.
Plus, +1 – recommend other people’s comments or posts to someone, or just to kill time.
Plusser(s) – people, companies (which are also people apparently), etc. sharing things on Google+ i.e. other poor schmucks like you.
Profile – information about you that other people can see. Like a work resume, in that you should make up lots of stuff about yourself.
Share – repost an item originally posted by someone else i.e. love that LOL cat image! Think I’ll spread the hate!
Spam – a canned precooked meat product. See: Ewww
Stream – a stream with items shared by all of your circles. Also near impossible to keep up with most of the time.
Tag – tagging embarrassing photos of your friends for all to see. Also, a good way to lose the aforementioned friends.
Thumbnail image – a small preview version of a photo.
Thumbnail video – a small preview version of a video.
Thumbnail – The nail on your thumb that you can take images of or film a video of.
Trending – An online disease which has spread from Twitter to Google Plus. Avoid at all costs #youhavebeenwarned
Troll – a supernatural being in Norse mythology and Scandinavian folklore. Also, a real asshole on the Internet.
Webcam – an Internet-enabled camera connected to a computer. Perfect for showing people what you really look like. Not recommended, unless of course you’re actually wearing clothes while posting.
White space – special feature of the new Google Plus design.