Most students prefer the fact that the entries are in alphabetical order. The anonymous e-mail thing you've set up is great. I cannot read other people's feedback because my eye keeps wandering back to it. I thought it was cool at first, but now I find it completely distracting. Well, even if one of my students is unhappy with that icon, I'll surely remove it.
Standard deviation is a measure of variability.
However, it does not indicate where the data points are located or whether the data points are distributed around the mean symmetrically, uniformly or lumpy.