Where to publish helpful, but informal papers? I have written an informal article 9 pages long, that covers some general, lightly technical material.  I wrote it because this material is not covered elsewhere, and I am knowledgeable in the field.  The material is light in the sense that it is not highly innovative, or even highly useful, but it is "good to know".  The subject matter is information security, with respect to radio systems.

I have posted the article on my personal webpage.  Should I bother to submit it somewhere for 'proper' publication?  It is not technical or innovative enough for IEEE or ACM journals (or even letters).  Or should I just keep it on my page for people with search engine inquiries related to the subject matter to possibly stumble across?
If you don't know where to publish something, but nonetheless it is of an appropriate standard and you consider it worth sharing, why not posting it to arXiv? You won't get prestige just for submitting, but:


people can find it,
you can easily point to it,
it is timestamped.