Not really. Participating on Signature cmapaign isn't bad or can caused banned accounts. But doing spamming within signature campaign can make your account ban.

Spam is a number one strict rules for users. Writing nonsense or off topic reply can't bring you anywhere but only damage your status. Might as well start by reading and contributing on good topics first. As a newbie you should not think or being afraid of ban. Your deeds can change the trajectory of chance to get ban. Just do a normal stuff or activity here and no mods will ban you.