Url: https://appdownit.com/hbb/ How to use: Just enter the facebook post id and submit, if it takes time to load then you will start getting likes. You can use this tool on the same post id after 3min and for different post id you can use it instantly.
The first thing these likes are not genuine and have nothing to do with your popularity. The second thing, it is dangerous or not? I said, Sometimes dangerous and sometimes not but not Worthful. When you these types of third-party apps for increasing your post like then Facebook block your account for temporary bases as terms of security. So, I suggest you do not use these types of tools.
http://addmefast.com - another tool for FB likes, shares, followers, post like, post shares... I've tested the tool and till now didn't harm me at all, but don't just focus on this tools, they are not genuine type of your traffic, also you are not targeting the right people in most, so use them wisely and don't exaggerate with them.