Hit and run commenting is a strategy that is commonly used by people looking to market their Facebook pages or their own websites. The idea is that you go to a Facebook page or group, leaving a link to your page or website and then leave. This basic principle is a tried and tested method for driving traffic, but it can definitely be improved upon.
One way in which you can adapt and improve this strategy is to try and improve the quality of your comment or post. If we consider a Facebook group dedicated to those interested in scuba diving, they are more likely to respond positively to a post related to scuba than someone simply dropping a link.
Therefore it's highly suggested that you try and find groups which are related to your page or website. Not only does this increase your chance of the post not being deleted, it also means that the traffic that you drive will be better targeted to your product or service.
One method that you can use to try and reduce the likelihood of your posts being deleted is to appear as someone who is new to the topic. If we consider the scuba diving example, it would be better to enter the group and post a message saying that you're new to the hobby and have been looking at a product (link to your product). This way you can include a link without it being spammy and group members are less likely to react negatively because you appear as a newbie who is just looking for advice.
It may get to the point where you have exhausted all the hit and run targets in your niche. In this case you have a few options to explore. Firstly, you can create a different Facebook account with a new persona and revisit the same targets. Secondly, you could choose to branch out to less related targets and thirdly you can choose another angle.
To help explain how you can choose another angle instead of straight up commenting on the group we will continue with our previous example. So once you've received some advice about the product that you're looking at, you could choose to then comment further on the post. Replying to the people who commented will drive the post back up the group members' newsfeed and may lead to people clicking on your link. Alternatively, you could come back to the group and give a review of the product that you were looking at, of course with a link to your website!