hey .. thanks for this tip.
I just checked my acct and I had not one but TWO Third Party Authorisation. WTF!?
Immediately revoked them.

1. AuctionBlox.com ( created 15-Oct-06)
2. AuctionWorks ( created 27-Oct-06)

Ebay should at least notify the account owner whenever a Third Party authorisation is set up. This is absurd.
What happens next?
Do we have to regularly check our accounts to ensure no new 3rd party authorisation is created without our knowledge?