Community with democratic rules, election of moderators, discussions about articles
Supervision and quality control is performed by the community. Disputes can be settled by an internal court with chosen membership for each Wikipedia, for instance the w:en:Arbitration Committee (English Wikipedia).
Authority of contributors is established through the quality of their contributions
Be kind
Text, images, sound, video or other digital files are contributed under a free licence, meaning that
Authors of works have to be acknowledged by a subsequent user of works on Wikipedia
The same licence has to hold for use of your work by others
Reach thousands of readers. Wikipedia is a good channel for information as it is widely used. Through Wikipedia you can correct, e.g., widespread misunderstandings
Your (corrections to) Wikipedia articles can supplement your lectures for students
It’s cool and modern, the pleasure and ease of collaborating on beautiful webpages
Outreach, if you contribute substantially to Wikipedia articles you can mention them on your academic publication list
Learn to work with the free Wikimedia software. (You can install your own private Wikipedia-style website at your institute etc. to exclusively collaborate with your coworkers and students.)
Thank you! It is worthwhile to follow these steps:
Preparation 1: please have a look on Wikimedia Commons and do a search there. Check whether your photograph can contribute something lacking there.
Preparation 2: give your photo or other digital file an appropriate distinguishing and descriptive filename. In general please do NOT keep the technical name your camera etcetera has given.
Preparation 3: determine the category on Wikimedia Commons your file would fit into