The long standing truism that there's no such thing as a free lunch applies here.
Computer surveys are a lucertive way to gain information on an individual in order to sell that information to a third party.
Be very careful of any credit reporting service
that askes for your credit card numbers along with there experation dates.
Facebook and Twitter are also selling information that people have entered on their websites.
There is an email
provider who scans their members emails to sniff around for keywords to target ads to them that they may be interested in.
Your employer can request, from your system adminstrater, a listing, and the duration, of internet
websits that you are on during the hours you're supposed to be working.
I wish I were still cruising.