Installing yaourt and set a fastest mirror
'yaourt' is the main reason that I stick to Arch Linux, so I couldn't wait to install it.
First you need to add these lines to the bottom of /etc/pacman.conf:
[archlinuxcn] SigLevel = Optional TrustedOnly Server = http://repo.archlinuxcn.org/$arch
Note: adding these lines into /etc/pacman.d/mirrorlist won't work, and will result the pacman stop working.
Then you need to select a best mirror. For me, the best choice is obviously this one:
Server = http://mirrors.tuna.tsinghua.edu.cn/archlinux/$repo/os/$arch
Because it's located in my campus! Leaving only one entry is usualy a good idea, because it's faster, choose the best one for yourself!