Google has just helped out the Google + nation with coming out with a stronger post filter.
What this post filter will do is:
- Control the content on your Google + groups.
- Flag questionable content automatically.
- Accept and reject content manually for you.
The tool is turned on as default for the page, or pages. When your creating a new community it should be turned on automatically. It will save your community from the forever spamming that happens.
Hey also, this is a sign that spam content is not good content with Google. Read about it.