Well, I think I have made my point perfectly clear, and this will be my last post on the matter. The reason for the 'outburst' was quite simply in response to emeraldfool's pointless, misconstrued, and belittling first post.
I don't see the point of this.
Now, if I do not see the point of an idea, I step out of the thread and ignore it. If I think it is a bad idea, I will say so, and give good reason why.
Are you really so popular you need to be reminded who you know and don't know? 
This felt very much belittling and insulting to me, besides making little sense. A popular character could know half a crowd or more, so the filter would do them no good. I would use this for close friends of my characters and have mouseover as a backup for looking around at others. Nothing wrong with having both.
It might stop noobs from OOCly knowing your name, but they're a lost cause anyway...
This just irritated me, as it is direct proof he did not read the entire post, or put very little thought into what the wish was even about before impulse posting. All of his following post just said basically "Play like I do, and there is no problem." which increased the irittation.
Had he even shown that he had considered how people play differently than himself before posting, then there would not have been a flame. Now, I was only irritated at him when making my posts. I log off when truly angry. But, in the end my point was made clear. Put thought into your posts when looking at other's ideas, or beware.