Google Plus is now supporting the use of Hashtags. As I mentioned in Teacher's Guide to The Use of Hashtags, the concept of hashtags was first introduced to Twitter with the purpose of creating communities around a specific content. Clicking on a hashtag will show relevant content.
Now Google Plus users can also capitalize on the potential of these content symbols. The process is virtually identical to Twitter. You can embed any given hashtag in your google Plus post be it in the start, middle or end of your post. Hashtags you use in your Google+ posts may also appear at the top of your post as related hashtags.
Here is an example of the #edtech hashtag I used in one of my recent posts on Google Plus
You can also search Google Plus using hashtags the same way you would do in Twitter. Just head over to your Google Plus page and type in the search panel the hashtag you want to search. A list of relevant posts featuring that hashtag will be displayed.
Google Plus also provides a list of trending hashtags that you can access and use. See screenshot below