And in general, how goes the fight for true decentralization?
Not too shabby. The potential of Mr Spreads anti-pool innovation has been noted, borrowed, adopted, adapted and is now obliquely traceable via reference #34 to Ziftrcoin (*) in Andrew Miller et als' preprint paper (PDF)
Nonoutsourceable Scratch-Off Puzzles to Discourage Bitcoin Mining Coalitions.
So there ya go.
Cheers
Graham
(*) Spreadcoin repos was created well before Ziftrcoin.
Actually there is a Suprnova Pool for Spreadcoin as well as Ziftrcoin

I prefer to call it "Pool Discouragement" rather than "anti-pool".

Yeah, I'm still trying to get my head around how the pool actually operates in this instance. For instance, does this pool operate using the same mechanisms detailed in the whitepaper?
If it did, anybody could steal the pools coins. I think OCminer has found a clever workaround though although I haven't seen the source code yet. There are a few ways to beat SpreadX11 as far as I know but none are widely used yet.
Its basically all around encryption.
With the original implementation you'd really have to expose the private_key to the client/miner and also transmit it publicly over the (inter-)net - which is a major security issue.
What I did is I simply added (salted) https encryption to the whole datastream between pool and miner which makes it impossible to intercept.
And I added some special tweaks to catch someone if he tries to get hold of the key - I'd be able to identify the "hacker" and ban him from the pool etc..
As a last resort I can even "hold" the first block the miner mined for safety and if the miner ever "captures" a block - I'd simply ban him and take the first block which I still have "on hold" for the one he captured...
Wherever there is need.. There is a way.. Look at ETH - The folks created the DAG file (and some other things) to keep pools etc away - Suprnova has a pool