I discovered I'm still "on" bikejournal.com, with a free account. I haven't been keeping track of my rides since 2008 (and haven't been riding much since 2009). But they still have my log going back to 2006.
Free is cool, of course, but limits how many fields you can enter into your log. Wondering if there are any other 50+ers on the site, and if you have any comments about the value of buying a membership. It's about $24/year, if I remember correctly.
I will say it was a trip down memory lane to see all the bikes I've listed over the years. I'd forgotten many of them!