to insert the nugget called "block1" in the article.article text article text {replacer block1} article text
I use it to insert inline google ads, but it could be used for all sorts of purposes. It's stackable for multiple nuggets.
Of course, there might be a plugin that does this already (it's pretty basic) but I haven't found it.
One last thing - how would I go about getting this released to Spartacus, if there is any interest?
P.S. I've not been using Serendipity long, but it's a nice system to work with. The plugin framework is particularly nice