If you use something a bit more distinctive than single pairs of square brackets, you could use actual English in the reference names without fear of clashes, instead of abbreviations like "wikip" and "wmf".
Heck, why not use the awesome superscript Unicode chars?
Wikipedia¹ is a project of the Wikimedia Foundation².
¹ http://www.wikipedia.org/ ² http://wikimediafoundation.org/
OK, it might not be that practical -- and may even conflict with some math formulas? -- but you must admit that it looks cool.³
-Evan
³ You must!