1 - You can acess Facebook, Youtube, Gmail, Yahoo Mail, Twitter, etc., etc.!
2 - Yes, you can even play Farmville in Linux!
3 - 99,999% free of Virus!
4 - You can watch videos, ear music, plug your IPhone!
5 - It comes with most of the software you ever need installed!
6 - You dont have to search outside your system for software, every piece of software you install is refered and safe to install!
7 - You can use your USB Pen, External HD, and everything compatible with Windows.
8 - Have new hardware? Just Plug and Play! There is more hardware supported in Linux than in Windows 7 (for certain if you count the number of old periphals that Win7 don't support)!
9 - It's easy to install, see post http://linuxmadeasy.blogspot.com/2009/09/easy-way-to-try-linux.html and you don't need to install to try!
10 - You know a lot of Linux developers, such as: IBM, Intel, HP, Google, Oracle. If they trust and develop Linux, why don't you?
Linux is easy... Believe me....