Many of these emails come across as simple links, going to the link will in most cases infect your computer with some malicious software which will in turn redistribute these links via email to even more users. The simple emails contain a link to an IP address or website followed by /news.html, /boston.html, or other related terms.
Its best to report these emails as spam or simply delete them.
If you have gone to this site you can check for infection by looking for the following registry entry:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SonyAgent: "C:\WINDOWS\Temp\temp86.exe"
If this entry is on your computer you are now one of the people sending out these emails.
You should contact your local IT professional to remove the infections.