Earlier: "... your obsession with our mailing list..."
I think that calling someone else's contributions "obsessive" merely identifies ourselves as intolerant, bored, or recalcitrant.
I think the case here is "bored".
I believe that the word "boredom" first entered our vocabulary in the mid 1800s - quite recently, culture versus evolution wise. Apparently, before that, people generally found things to do with themselves. Now, we don't have time for anyone who doesn't entertain us!
Good reading at: http://www.answers.com/boredom (1,553 words from Wikipedia included!)