of course you are in a clique - cliques are natural formations in any social structure. You assume that clique is a "bad thing," but is just any collection of actors beyond dyad or triad in size. Let me assure that I am not being judgmental - cliques are neither good nor bad in and of themselves (although specific cliques can of course be either). Almost everyone in this forum are members of one or more cliques, whether we realize it or not. There are very few social isolates outside of the true lurkers.
If we did a social network analysis of everyone on the board, very clear tendencies would emerge for anyone with a sufficient number of posts - you would see that we tend to respond to certain individuals more frequently than others, that they tend to respond to us, and that likes are distributed in similar patterns. Even without that analysis, those patterns all exist.