Can we have a +1 button please?

[4K2K]

Sometimes someone writes a post or makes a good point so it would be good if there was a +1 button we could press next to the post. So it could say "4 users said +1 to this post" or "4 users think this post makes a valid point" or some similar type of system. Maybe you are only given a certain amount of +1 button presses available per day/week so the system doesn't get overused.