I thought this might be helpful for when us older SRers refer to programs that newbies might not know about. Here is a run down of each common Windows program and where to find them. If you have a Mac please put a similar post below for fellow Mac users.
CCleaner -> this is a free cookie cleaning program. It will clear out cookies, history, and temporary internet files. Download the current version and install/run
http://www.ccleaner.com/download
AVG Free -> free antivirus software. It caught many things that my old Norton missed!! You will have to uninstall other antivirus or at least disable them before running this one. Don't run 2 antivirus softwares at the same time. I hear bad things will/might happen. Download the free edition. Run all the time
http://free.grisoft.com/doc/download.../frt/0?prd=aff
Spybot Search and Destroy -> searches for spyware and deletes them. Click on download now. Run every couple of days. Note: this has been causing some issues with taking the daily surveys lately (blank/white screens, not being able to click on the link). If you experience a problem uninstall this software. You should be ok with running your antivirus and adaware.
http://www.download.com/Spybot-Searc...ml?tag=lst-0-1
Ad Aware -> searches for ad ware and spyware on your system and deletes them. Click on download now. Run every couple of days.
http://www.download.com/Ad-Aware-200...ml?tag=lst-0-1
McAfee Site advisor - to warn about sites that may potentially spam you or put spyware on your computer.
http://www.siteadvisor.com
Editing to add in Mac Stuff as I find it (I am not familar with Mac so these may not be the best):
http://www.santasw.com/ -> same idea as ccleaner above but for Macs.
Mac site which has links for spy ware removal, firewalls, antivirus and where to find them -> http://www.unwantedlinks.com/macsupport.htm
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