The second is to really avoid promoting yourself, or your services, or your business, in these groups when you first join them. Like with any social network, you really need to build trust. And the best way to do that is to simply engage with the content that’s already there. Start replying and making genuine comments about the content being posted by people that could be prospects for you.
At our agency, we work with sites of varying sizes, from very large to quite small, and recently, we have noticed a trend at the enterprise level. These sites aren’t relying as much on Google for traffic any more. Not only are they not relying on Google traffic, but also, the sites are getting less than 10 percent (or slightly more) of their organic traffic from the search giant.