M$ sucks

My mom's laptop came with M$ Office 2007 trial version that saves everything in a .docx format by default. The sucky thing is that docx is a completely proprietary format that things like Office XP or OpenOffice can't read. Also, whenever she sent these docs to friends, they couldn't open them since they didn't have Office 2007. The trial period ran out and I have to get some sort of converter to convert the files. This type of stuff just makes people mad; no wonder M$ is getting less popular these days.