If and when Spark accepts credit card or paypal payments from the UK I will happily pay for use of the forum. I made a voluntary donation over on Knifeforums using paypal.
What I will not do, rightly or wrongly as people may see it, is fork out around $15 or so just to get a US Dollar money order. I do think the forums are worth the money of a Gold membership, but I resent giving the banks a chunk of money on top.