WetSpot is an addon that will automatically rotate the tracking methods for you at chosen intervals. This includes all tracking types - fish, minerals, herbs, and treasure. It will also rotate hunter and druid tracking methods (humanoids, beasts, etc.).
For example, if you are a herbalist and miner, while riding through a zone you can change between tracking for herbs and then tracking for minerals every 5 seconds. Or if you are a hunter in a battleground, you can switch between tracking humanoids, beasts, and hidden every 3 seconds.
You can choose whatever tracking methods you wish to look for - unknown spells will not be available to you. That means non-hunters won't see the hunter stuff, and non-dwarves won't be able to see the beer treasure method. If you have not learned the spell yet, the option will be disabled. WetSpot also detects when you are in a city, and will disable itself accordingly. When you exit the city, it will turn itself back on. You can access the WetSpot menu from the Blizzard options frame or by typing "/ws" or "/wetspot".
To do list:
Localization, LDB plugin, optional display bar, support for other tracking methods (low-level tracking, mailboxes, etc.)
This is my first official addon, and the original idea and coding comes from the now-defunct addon Spotter. The original author has given up the project (see comments). I took the code, rewrote it into an Ace3 mod, added more options and placed it in the Blizzard options frame. Some lua code was also learned from WowLife. Thank you to both of those authors for the ideas and code.