He's voicing his concerns, what exactly is the problem? The sooner you get it fixed, the sooner he doesn't have to bring it up anymore. Rather than being politely dismissive of people, perhaps you should consider that this thread has received far more traction than any of the ones with people saying they are happy. Asking people not to talk about what is frustrating, or angering them, only serves to give the impression you are more concerned with silencing criticism than listening to your users.
If nothing else, consider the activity in this thread versus the "in support of" thread that has 20 posts from a small handful of people. There's a poll showing that 3/4 of those responding do not like the changes, yet Huddler keeps making comments about the response being mostly positive; in direct contradiction to what is being said. I for one am getting tired of seeing people being told "you'll get used to it" or "give it a month", when it's pretty clear that many of us are not going to get used to it. Besides being condescending, and a bit arrogant, it essentially dismisses the person's concerns without any remedy. Even the well tread Huddler line about it being tough for the first month, but then everyone seems to settle in isn't panning out. You can tell yourself summer slows things down all you want, but the user exodus isn't that hard to observe. You may have had a small bump after the changeover, but that was people checking out the new look, and is commonly what happens. That glow doesn't last forever.
You want people to stop complaining?
Stop patronizing people and telling them they'll "get used to it". That may be what you want, but it doesn't mean it's true.
Stop telling us that "it's being worked on" or "it's coming" in reference to features that were present for a long time before the change. If Huddler was even half as good as they try to make themselves out to be, they should have had all the existing features ready to go before ever proceeding with the change over. A glaring example is the mobile app. Telling people to buy a 3rd party app is not a solution to removing the free app that everyone loved while Huddler gets around to doing their job. Seriously, what kind of morons claim to know how to market a site, but don't have a branded app ready to go at launch for a forum this large in 2012? Short answer; incompetent people with no clue what they are doing.
If someone is complaining about things a lot, it's because it's important to them. Don't ask them to keep it to themselves unless you want to alienate/anger/annoy them further.
Quit stocking the site with enough ad scripts to kill an elephant. They're annoying, they're impacting the user experience and they're just plain obnoxious. Find a better way to to do it, or just find an entirely different method. What's the point of trying to sell advertising when your heavy-handed methods have led a lot of users to simply block all of the ads? Advertisers are going to notice things like that.
Edited by IronCamel - 7/7/12 at 7:28pm