The basic scenario is that, in the course of answering a question, I might do a few searches and not really find a suitable link for additional information. If I've got some spare time and I'm familiar with the topic, it may make sense for me to write up an appropriate document, revisit my answer, and add the link.
Similarly, I might have some old code lying around that can be tidied up fairly quickly and contributed as an example - but it may be too big to just insert into an answer. A few snippets to illustrate the principle makes sense, but providing the full example has value too.
The problem is, where do I put these things?
I have a couple of options, of course - free ISP web space, free web hosts, a commercial host aimed at small sites, free file hosting etc - but they don't really seem quite appropriate to me.
The issue is that, like the questions and answers, I think these contributions should be editable by the community.
Is there a good or approved way to handle this kind of thing? Is it a real problem at all?