And that is fine. So long as you are not raging and demanding people only post that. I have asked for particular characters, or particular characteristics, or pairings before... but never to the extreme that Small Top-Chan does. And we are just trying to remind everyone of that.
General topics and if you prefer something specific, then ask but not exclude other options. For example, the Legend of Zelda characters. But not "Link only, Link required, Link Sub ONLY!!@1"