Two great Questions??

Today, I installed Linux in a few of office Internet kiosk pcs. People started using it.
There I got two big questions...

1. Can you also browse in Linux?
The man, who asked me this is a senior person.

Now, another guy was using the firefox for quite a while in the 2nd floor Internet kiosk. When, he stood up, I sat on his chair and he suddenly looked back and asked me "Which operating system that was??"...
I replied "Linux!!"
What u want to say about that??