It matters because the girls who caused me to post in the first place are friends of mine, as are their dominants, people I spend time with in the scene, at clubs and in vanilla situations.
It annoys me because many conversations and activities are driven towards who had done what, with whom and how many times and it tests my patience once in a while.
since I'm not overly competitive, or brag about what I do and with whom I tend to get bored.