Why Tags? An example of a very important Tag for a plant observation/photo is 'flower' (if the observation is of the plant when it is in flower). This Tag is important because it will be used to build a calendar of when the plant is in flower (NatureShare's Calendar feature is currently under development). Other examples of a Tag include 'leaf' (if you have uploaded a good picture of the leaf), 'male' or 'juvenile' (if you observed/photographed the male or juvenile of the species), 'mating' if the observation is showing a mating pair, etc. Also, Tags will soon be searchable within NatureShare making them even more important for, for example, searching for photos of specific features of the species (eg. searching for leaf pictures, mating pictures, photos of the male of the species, etc). This will become increasingly important as the number of photos per species becomes increases.
When you start typing in a Tag, a dropdown box appears that lists all the similar Tags used in NatureShare to date (ordered by popularity - most used Tag is listed first). You don't have to use these and you can simply ignore the dropdown box but it can be an advantage to use what is already commonly used. Choosing from the dropdown box also helps to avoid the introduction of typos.
What is the "(Overall)" box? It is recommended you click on the down arrow and choose the species the Tag applies to (eg. as in the example image to the right from a Wurmbea dioica (Early Nancy) observation). Usually you will have entered only one species so it seems a bit pointless - but it isn't. This box is designed for the situation where more than one species are in the photo/observation. For example,
More Tags relevant to specific categories of species: