I probably experienced the best case scenario for donation recruitment. I posted a WTB thread on something (child seat tethers maybe?) and someone PM'd me to offer theirs, as long as I agreed to donate to the site. Given that I was willing to pay at least $20 for the part + shipping, it was a no-brainer. Not that everyone should recruit that way, but it really demonstrated to me the value ($ and otherwise) in supporting the site.