If you want your link to work in your signature, you will need to get rid of the <a href= & </a> and change it to....
[URL=http://search.ebay.com.au/_W0QQgotopageZ1QQsassZptiliffeQQsorecordsperpageZ50QQsosortorderZ1QQsosortpropertyZ1%22%3EMY%20EBAY%20AUCTIONS!%3C/a%3E%5C]>My Ebay<[/URL]
That way your posts wont make it so hard to read the threads
Always great to see a fellow Aussie here!!