Based on my understanding, the word 'spam' originated from Monty Python's Flying Circus comedy show in which the word 'spam' was used repeatedly to a point of annoyance.
spam (n): disruptive online messages; to execute an action repeatedly
Anything that needs to be said in discussion on this forum can be done so by single posts. Each post is limited to 40,000 characters, which should be more than enough room. This also helps us keep the forum clean and easy to read for others.
Our moderators are reasonable, and will generally and kindly warn someone if they are spamming something. However, repeated offenses may result disciplinary action, and the severity of discipline is left to the discretion of the moderators.
Advertisements or links posted to business or marketing sites (i.e. anything used for the sole purpose of financial gain) are considered severe spam, and may result in an immediate IP ban.
In short, if you act in an appropriate manner, as you would face-to-face in a public forum, there shouldn't be much of a problem. If you have any questions regarding what may be considered spam, contact a moderator, and they will do their best to help.
