Unfortunately I have been doing quite a lot of buying and selling lately and have had to empty my PM inbox and sent items a couple of times since Christmas. Since I had received an acknowledgment of receipt from pro.wannabe I am afraid I deleted his PM with his address details.
I have been quite surprised by some of the members on this forum, I have given away a lens and a Nikon D70 battery and received no thanks for either, and an A3 printer with spare ink cartridges which I eventually got a belated thanks after contact about something else, so it would not really surprise me if someone decided to take advantage of your generosity to avail themselves of a Spyder, although I genuinely hope not.
If something like this is offered again I would suggest that there is a minimum post count of at least two or three hundred to take part, this might not prevent the same thing happening again but a least you would know they had been a regular poster and therefore less likely to go pete tong.
Good luck in your quest, and if you do not get it back, count me in to any collection that may be raised to replace it.