I have just rung CS also.

Got a very helpful CS rep who advised:

- CS are not sure what has happened with this promotion as they can see the terms & conditions have been amended - and they are now aware it is a glitch, but not sure quite what the issue is. 

- CS rep indicated that usually if you are not eligible you should not be able to accept the offer

- If the current promo lets you accept the offer and the promo tally appears on your myeBay page then eBay has given you access to those free listings

- CS rep assured me that if I incur any fees for auction and buy-it-now listings during this period my account would be credited and gave me a reference number in case I need to follow up

- I specifically requested their advice to post on the discussion boards and the CS rep advised that anyone seeking to use the free listings that is concerned about being charged for them should ring CS so they can review their account and note on their records that the promo tally has appeared on their myEbay page. 

So off to list and use up this bonus freebie on auctions, auctions, auctions