open-source software

• more
• more

places online that there's a lot of free information available

• Rootsweb (particularly its Social Security Death Index)
• CriminalSearches.com (surprising amount of data)
• Wink.com (searches social websites)
• ZoomInfo.com (searches ALL websites)
• more

scads of for-pay places, but they still let a small amount of info leak

• ancestry.com
• LongLostPeople.com
• peoplefinders.com,
• more