Only read emails that come to your Ebay email which address you by your name, not your username.
It is never a good idea to follow any links - you may need to change your password.
Ebay advise:
Suspicious email
- Don't click any links in the email or open any attachments.
- Forward the message to us as an attachment at spoof@ebay.co.uk.
We'll let you know that we received the email.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)