"Latest Reputation Received"?

Basically:

You give somebody reputation by clicking the link next to 'edit', and typing a comment, and checking the approve or disapprove box. The amount of rep points you give depends on how much rep you have. You may view the most recent comments in the User CP, as well as your score. Every 100 points, on the 50 (eg 50, 150, 250), your rep status changes (until you get lots of dots), you may view your status by hovering the mouse over the green dot/s. You get an extra dot (usually) every 100 points, so 100 points = 2, 200 = 3, 300 = 4, etc. There are also certain rules that UM enforces, including not being able to rep the same post twice, and not being able to rep more than a particular limit, in 24 hours.

I hope I've explained it well enough. :)