unsubscribe

I was wondering if people hit the unsubscribe button on junk mail or does this just alert the spammer to a live address? Been receiving junk / spam email from big, brand name companies with non big brand name email addresses, which I delete en block unopened 99% of the time.

I have a client's laptop on my desk, that I use to get into their server, and also because I have an email account on their domain. I keep getting email adverts, and when I click on the 'unsubscribe' link, a Windows Explorer window, entitled Locate Link Browser pops up, browsing 'My...