Web-based Recon

Target's own websites:

• Press releases
• White Papers
• Design Documents
• Sample deliverables
  
• Open positions
• Key people
• Contacts

Related Sites:

• Business partners, ISP, suppliers
• Competitors, review sites

Public Databases:

• SEC's Edgar database (Public Companies... http://www.sec.gov/edgar/quickedgar.htm)
• Job Sites (monster.com, hotjobs.com, etc.)
• Blogs
• Social Networking Sites
• Newsgroups
• Wayback Machine
  

On/Off-line

• Newspapers
• Magazines
• Etc.