Microsoft holds patents on particular font rendering technology for LCDs. Most distros remove any patent protected fonts and as a result fonts look bad on LCDs. But there is a fix!
These two reddit threads came out about the same time with some discussion:
For openSUSE 13.1 users, there is a repo to add to yast that will provide better fonts:
For Fedora users, check out this repo:
Ubuntu users may want to check out this post:
For more on the patent, freetype.org has a FAQ-type of page here: