[ANN] Please share useful blog posts on this list with the [BLOG] subject prefix

[Bastien]

Adding [BLOG] or [TIP] in the subject prefix allows for such messages
to be referenced on https://tracker.orgmode.org/news (along with [ANN]
messages). 

It will then be possible to include these posts in the orgmode.org
homepage, using e.g. https://tracker.orgmode.org/news.rss.

This is experimental, let's see if this helps spread the word about
useful blogs.

Thanks!

-- 
 Bastien