Quoting myself for relevant content here:
The way they make announcements to a wide audience without ever communicating directly with any of the users here on the forums reminds me of the smug behaviour of deepbit during its dying/quietly fading days but in an even worse manner showing what looks like a complete lack of respect to miners. Compare their communication to Eleuthria's of BTCGuild who has continually responded to almost every single comment no matter how mundane.
Users have more power than they think and the bitcoin mining community at large has held many groups to task over the last few years and it remains the responsibility of users to continue protecting other users and bitcoin. The reason ghash did not reach 51% was because of the many warnings posted here and elsewhere. While you're all complaining that a simple announcement by ghash to tell miners to direct their hashes elsewhere is nowhere near enough of a total solution to the possible destabilisation of the network by them receiving a majority of the hashrate, bear in mind the only reason they have made this announcement is because of continued pressure by the community and it should be seen as a major milestone, but I agree we must not become complacent by this one step alone.
I absolutely agree that we should not become complacent. As you point out, the community at large has some power, and also has responsibility. Yes, we as a community of miners are actively keeping an eye on things, pointing out areas that require attention, etc. The pool operators are also responsible for taking proper action. The warning message is certainly a great start. It is only that, though: a start. Further action needs to be taken by the pool. If GHash.io truly means what they say, then such action would be taken by them.
Posting warnings here is useless. They should raise fees and start disconnecting slower miners.
How is disconnecting slower miners the solution? What is considered "slow"? Wouldn't that just encourage faster miners to then connect since they don't have to be concerned? I'm also not too sure about the raising fees proposition. What does that do except get GHash.io richer? They buy more hardware, have more "cloud" mining on cex.io.