What does "shared" fees means ?
I found that list https://en.bitcoin.it/wiki/Comparison_of_mining_pools and for few pools we can see that they "share" their fees. Sorry but I don't get it. What's this ?

Probably means the transaction fees on each block are shared amongst the miners.

And currently they average over 2% - so any pool paying PPS or not sharing the fees on PPLNS is charging it's miners a big pool fee.