Here is the definition of troll (when used as an internet term) from Wikipedia. I believe it is self explanatory.
"In Internet slang, a troll is someone who posts inflammatory,[2] extraneous, or off-topic messages in an online community, such as an online discussion forum, chat room, or blog, with the primary intent of provoking readers into an emotional response[3] or of otherwise disrupting normal on-topic discussion."
I would suggest that YOU look up the definition on Google of a Fan. Then you will understand the unbridled enthusiasm myself, Paddy and Eye and countless others on this forum have for Tiger.