is %spam made by mIRC or did you made it yourself?
Like Abcdefmonkey said... it's just a variable created to make sure the !wale doesn't flood channels.
What are the options of spam? What do it consider as spam?
That all depends on where you implement it... in the example I gave it will consider all !wale's as "SPAM".
So once someone has done !wale there is a 1 minute wait (60 seconds) before anyone else can do it again.