About our Internet Service Provider

I am just wondering, if it is possible for our ISP to see what we see in our pc... I mean, could they also possibly can monitor what sites we visits and that they can really "watch their" clients on what they are visiting?

Maybe, I may sound weird or slightly paranoid... but I am curious bout this thing coz I really suspects that my ISP are watching me...

How can we know if our ISP are watching us?

And could it be prevented?

 

I have a good friend that works for the cable company that supplys my internet. And trust me, if they wanted to see what websites you are looking at and what you are doing they do have that capability. they can't see your desktop or anything like that. They can't see my computer on my home network because of my router but they can see all of the wireless comps.