Very clear, Colm. Thank you. It was "limited by shares" that I was talking about.
Just putting an idea out there on the back of what Andrew wrote:
Would the activities of a Wikimedia Ireland be so greatly different from any activity we might engage in as individuals right now so as to warrant a greater fear of being sued than we have right now as individual? Or would it attract greater attention for would-be suers?
If no then an unincorporated association would probably be sufficient. At the start anyway.
Oliver