You_are_dismissed virus. Did you get it?

[urb]

They are unfortunately getting better at what they do.

Collecting email addys from sites which they know are related and are likely to exchange emails. Or harvesting from message boards where they know people share an interest.

If you are using MS Outlook, it's worth viewing email in plain text mode.
Tools>Options>Read> and check the box for "Read all messages in plain text".