HappyTotem is a bar that shows your active totems. It also graphically displays the duration left on the totem, along with whether you are receiving the effect of the totem or not. This lets you see if you're in range of the totem and, in the case of Grounding Totem, if it's ready to absorb a spell. Be warned that HappyTotem cannot tell if you're in range of Tremor Totem, Flametongue Totem, Mana Tide Totem or Windfury totem; these totems are never shown as out-of-range.
The image above shows the HappyTotem bar. You can see that Strength of Earth, Healing Stream and Grace of Air have been placed, while no fire totem is down at all. Healing Stream and Grace of Air are both out of range of the shaman, and hence coloured red.
The bar is movable; to move it, hold the mouse just above the bar for a second...
... and the title will become visible. You can then drag the bar around by the title. Right-clicking the title bar brings up a small menu (shown below) allowing you to turn the range indicator on and off.
HappyTotem doesn't know when you cause a totem to disappear by walking very far away from it, but hopefully that won't be a problem for you. :) You can clear its display at any time by using Totemic Call.
You can show or hide the bar with: /ht
Please email any questions/comments/protests to kay@dancingfortune.com. I've quit WoW so I probably won't be updating it myself in future.