Actually, I was thinking more about the sharing of experiences about how to fix the cars when they go wrong than just the parts availability. As well as my experience with the main relay, I was thinking about when my starter motor failed. I could have just bought myself a new one, but instead was able to learn from Jonathan's post about how he replaced the copper contacts in his starter relay for ~£25, and consequently saved myself some money. My post about the success I had with Kaz's post helps to keep this knowledge current. Facebook is searchable, but it doesn't seem to encourage this kind of sharing. Or maybe I'm not slick enough with Facebook .