I thought this would be a more obvious way to give someone a high five for cool, interesting, funny things they say. Basically, it's like giving rep, only easier and more obvious to everyone. This doens't mean rep is going away. In fact, liking someone's post adds to their rep anyway.
I doubt anyone needs a walk through, but here's one anyway:
Like the post? Click like.
Don't like the post anymore? Click unlike.
If you want to turn off the alerts for this feature, you can do it in the control panel:
Click 'Settings' in the upper right corner
Scroll down to the bottom where you'll find U LEIK? > Settings
Note: None of this works in Tapatalk or Forum Runner.