When giving advice in a post it can be helpful to explain the thinking behind the advice you are giving and your personal experience that leads you to feeling confident about the specific advice your are giving.
I'll give an example.
The original post reads something like this:
Help! I think my fish have fungus, what should I do??
The next forum member giving advice says:
'Treat with salt'
What is missing in the answer is quite a bit. Why salt? What does salt do to a fungus? Is there any situation that salt would not be appropriate? Have you personally had a fish with a fungal infection that you treated with salt, and if so, what were these results?
Maybe something like this would be even more helpful:
'One common treatment for fungus is to use aquarium salt. My Serpae tetra recently had a fungal infection and I treated with salt. I left the salt in the water until the fungus cleared up (which was about a week). After that I did a water change. If the fungus had come back, I would have dosed with salt again at a higher concentration for an additional week.
Salt works by dehydrating the fungus, which kills the fungus (but not the fish).
Do you have plants in your aquarium? If so you need to know that plants are sensitive to salt so you might need to move your fish to a quarantine tank if you intend to treat with salt.'
Not every post has to be this detailed, but the additional information can be very helpful and educational, which is one of the prime reasons we are all here.