I might regret saying this, but I'm sure my custom tool is much better than that. (Note that I haven't checked that page.) Mine is a done in Flash (ActionScript), it's quite compacted and with it I can:
-Keep trace of the plots which have been revealed, thus avoiding excessive neuron burning.
-Place "flags" into possible plots or others, slightly helping me to deduce where high plots are located.
-Mark claimed plots in their colors, to make it easier to plan my next move and knowing if the host is likely to grab MY plot next turn. Ya' hear, boy?!
It has no automatic actions, you must do it all, but keep in mind that many players might consider it to be "unfair" anyway, so download it at your own risk. I'm just posting it, it's your choice to get it or not, or mod's choice to remove it. Also, a good tool doesn't make a good player, just check my win rate if you don't trust me.

+

(We need more smileys.)