I'm on the PostgreSQL home page: what series of links would lead to "uservoice.com" so that I can submit my feature request?
If that site is going to be recommended over posting to pgsql-general it should feature prominently on the main website.
I've seen or heard nothing that suggests anywhere except pgsql-general, this list, is the correct place to submit such requests. I do think we are lacking sufficient communication in this area but would rather see that corrected and formalized before we go pointing people to third-party sites.
It is interesting that this channel was opened at least in the middle 2009 or before (judging by the feature/comments timestamps). It would be nice if uservoice provided any hint or contact for the owner of the channel, because right now it appears to be a total mystery.
I'm not sure if the owner is subscribed to -general, I wouldn't be surprised if not. Otherwise, please speak up. :-)
I think that such user communication channel can be useful if maintained properly, and if the rest of the community would be aware of its existence. What I dislike right now, is that it pretends to be official channel without any disclaimer or references to the actual official communication channels (which are the mailing lists and IRC, AFAIK).