This post is number 44 in a series.
![A page from my notebook, containing today's entry in this category](http://farm3.static.flickr.com/2243/2439828621_c7081380df.jpg)
And it is also a tribute -- an unforeseen one, as it happens -- to Blue Girl. She posted her 50th yesterday and, magnanimous to the last, her very next act was to encourage those of us she inspired to copy her. She also posted a scan before I did.
Two ways to respond: webmentions and comments
Webmentions
Webmentions allow conversations across the web, based on a web standard. They are a powerful building block for the decentralized social web.
“Ordinary” comments