1. I'm not sure about adding more JavaScript-based functionality.

The original idea was to create just the static code, but I got a few emails asking for something that could be reused without having to generate new code for each page (for example on a blog). I'll nevertheless save this for a future consideration.

2. This sounds interesting, I'll check this out.

Thanks for the suggestions; if you'd like to keep an eye on updates to the service, there are links to my blog and Twitter to follow on the site.