How often to post on LinkedIn and Google+ ?

 As you might expect, research is deeper for Facebook and Twitter than it is for any other social network. Frequency data for LinkedIn and Google+ is much harder to dig up.

The best guideline for LinkedIn sharing comes from the site itself, which published a marketing report claiming 20 posts per month allows you to reach 60 percent of your audience.

Twenty posts per month equals one post per weekday.

Advice for Google+ is a little more of a stretch. Even heavy users of the service can differ on the “right” frequency.

Perhaps it’s best to think about which social network most closely resembles the format and audience of G+. Facebook could be considered the closest model, so you can start with Facebook’s five to 10 posts per week model.