Not part of cleaning but do:
- If you're not shooting something critical or something that requires taking it out, always use a UV filter on your lens. (It actually saves asses big time and distortion is close to zero).
- ALWAYS store your lenses with BOTH caps. Minimise the dust build-up.
It's amazing how careless some people can be.
... there are a lot more... but well...
Good article ;)