You are right.. normally there are large fee's. But abcpool is 0% fee pps
Yes, but that's just a temporary promotional offer. On their own site they say they will introduce a fee later on.
And even now I am quite sure they have a few generous miners who donate the default 4% or more, even if the don't have to.
Of course I could do something similar, but I don't think I will, because that doesn't seem fair to me.
Proportional pools (including PPLNS pools) don't worry too much about these problems, because they never give away more than they earn.
This is false and mainly why i wanted to reply to your post.
http://lc.ozco.in pays out 60 ltc per block. and also
http://pool-x.eu pays 5 LTC block bonus to the block finder. Elitist Jerks use to do 50 ltc block bonus to the block finder.. so saying that a pool will never give away more then they earn is false.
Again, those definitely look like promotional offers, which probably won't last forever (unless those guys want to lose real money, because server costs are real).
I believe in Litecoin. What I am trying to build is something fair and durable, not something to attract miners. I don't want to reach a day when I will have to say: "Sorry guys, the offer is over, now we get serious." What would late miners think?