I ended up exporting a CSV file of my books on librarything into my account on goodreads.com. So far, my difference in usage is that librarything holds a record of the books I own, while I'm using goodreads to catalog the books I'm reading or have already read. I'm not entirely certain that I'll stick with this; I'll want to wait to see how the communities around both sites shake out in the next few months.

(By the way, to Jon, Ashley, and those of you whom I gave collectorz.com gift certificates to for Christmas -- if you can export a CSV or tab-delimited file of your collectorz information, we can get it into these sites...no point in duplicating effort!)

I am 'domesticat' in both places (please, restrain your shock and surprise). The 'goodreads' chiclet on all pages on cat.net currently takes you to a page that shows what I'm currently reading. Goodreads has a widget that will actually list the books you're currently reading, but right now the display format is too wide for my page layout's sidebar. I've emailed the folks behind goodreads and requested a text-only version so that I could style it to fit my page. They responded that it was a good idea, and that they'd put it in the queue. If you use goodreads, consider emailing them to ask for this.

I wished years and years ago that I had started tracking what I'd read.

Along those lines, does anyone know if something similar exists for music? If not, whyever not? I have to think barcode numbers are ubiquitous on CDs as ISBNs are for books. We have this disturbing, tentacle-laden, Tokyo-eating music collection that I really want to categorize, and I really like the idea of using social networking to find new music (see also my last.fm box in the sidebar).

Update: GuruLib looks like it might be promising, but it looks awfully beta.