Sometimes you get a Ranking and sometimes you don't?

You don't automatically get top ranked unless you've responded in that category before but ignored the request to add it to your interests. You can check your rank on your profile, their's a category for interests ranking. I'm a bit confused by your topic but I hope that I have cleared something up for you. If you've checked the latter and your still not ranked, then I don't know what to tell you.

You know, I never noticed that. I am going to see for myself when I respond to a discussion. That is weird. I would think you would get ranked regardless.

i have not given this another look ,so i donot know whether i am being ranked.sometimes for convienience sake ,i do pick up an interes.lots of interest have accumulated now,my profile needs cleaning.