Does the word "troll" necessarily imply negative connotations?
More specifically, can the word "troll"/"trolling" be legitimately used to describe a posting which is clearly made with intent of merely generating laughs on April 1st?
Please note that the question is specifically about connotations involving intent - e.g. the assumption is that the posting is otherwise on-topic and not disruptive (e.g. a standalone question on a Stack Exchange site, which would be classified as on-topic AND not disrupting existing questions).
Urban Dictionary defines "Troll" as:
One who posts a deliberately provocative message to a newsgroup or message board with the intention of causing maximum disruption and argument.
This seems to imply a clearly negative intent and thus inapplicable to April First jokes.
Online Slang Dictionary says:
A person who posts to an internet discussion group or chat room with the sole purpose of disrupting it.
In Internet slang, a troll is someone who posts inflammatory, 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 or of otherwise disrupting normal on-topic discussion.
Again, making the assumption that the posting in question is not "extraneous, or off-topic", this seems MOSTLY to imply negative intent connotations to me.
However, recently someone made an argument that, since "aiming to get laughs from people on April 1st" can be classified as "provoking readers into an emotional response", it should fit under definition of a troll.
So, my questions are:
Is there a well accepted connotation that "troll" implies negative intent, as opposed to including intent to provoke harmless April 1st laughter?
As a side question, does the wording in Wiki article (** or of otherwise disrupting normal on-topic discussion**) also impose a negative intent on "emotional response" part via the use of "of otherwise"?