connotation
Say I am offering a sharing service where people can exchange ideas and information through a simple interface. Users can start a group conversation and add their friends to interact with. Is the word clique too pejorative to describe such a group of people?
Being a mathematician, I particularly find the word clique a very good choice, but my colleagues are afraid it might evoke restrictiveness and exclusion based on the typical "high school cliques".
No. Effusive is not negative, it has a positive connotation to it. 'He was very effusive in his praise of the features.' is fine.
effusive
adjective demonstrative, enthusiastic, lavish, extravagant, overflowing, gushing, exuberant, expansive, ebullient, free-flowing, unrestrained, talkative, fulsome, profuse, unreserved
He was effusive in his praise of the General.
Also,
This ngram for effusive in his praise and effusive praise shows the expressions are on well-trodden territory:
Adding to what everyone has mentioned here, newbie should not be confused with noob (Which happens a lot), for all intentions and purposes:
newbie should be considered a word that references a person that is new to something, inexperienced or otherwise lacks in that particular moment, the knowledge to do some tasks, activities or any other actions in a way that shows experience and knowledge about the usage of how the system in use works, be it a particular game (where it is used most often), a programming language or other activities where the user can gain experience over time.
noob on the other hand is the negative aspect that gets many users confused with newbie, this is mostly related to the pronunciation and environment where they are used. noob means a user who has at least one of the following characteristics and still does not appear to have gained experience over time:
Because of all of this, one would think the user knows about the system but after having some experience with the user, one finds out the user, with all of his/her time using the system and learning from it, has nothing to show for. Basically an "experienced user" with 0% learned. In this case, noob is used to denote that the user, with all of his/her time spend in said activity, game, task has not learned anything new or has nothing to show for.
So the basic difference is that newbie is only applied to a new user that is introduced to a system he/she does not know yet. noob is used when a user has already time spend on the system and has learned nothing yet.
Best Answer
Your colleagues are correct, the word has an English language meaning...
This suggest an unwelcoming group, or self selected group of people who aren't interested in what others have to contribute because perhaps they think they are better than the others.