Dr. Debt,
thanks for your response.
I believe you that there is no explicit law against fake bids in Ireland.
However, it does seem to follow the definition of fraud.
>>The buck stops with the buyer. You only bid because you believe the property to be worth more. You don't bid for the sole purpose of competing with someone else.
The hole I see in this is that it would seem to apply just as well (or badly) to any kind of misrepresentation by the seller, and therefore hold the seller immune in principle to the crime (or tort) of fraud.
Placing fake bids misrepresents the market -- it is a material misrepresentation.
I do know that people have been charged with placing fake bids (on eBay) in the UK. I don't know if they have a special act covering it in the UK, or if they are just not soft on fraud, as we tend to be here in Ireland.