Just my quick T on the 'High Five' System ...
I like it. It has its advantage where you and a poster cracked a good joke or agree with someone on something, or agree to disagree, and just want to respond with a quick high five and nothing more. Then with they Salute System, you can leave a detailed comment and be more in depth if you chose to do so.
I like them both and if both are kept, will continue using it ...
TIA