To introduce myself, Marco Swart is my real name. You can find more personal information on my LinkedIn profile. MarcoSwart is not the name I use for my substantial contributions to several Wikimedia projects, both in English and Dutch.
I have chosen to use my real name for my activities as a member of the Dutch chapter of the Wikimedia Foundation, where you can find me by the name of MarcoSwart too. I'm also involved in running wikis for several purposes in the Netherlands. On MediaWiki I also use MarcoSwart, as I see no reason for an alias there.
I am not always a regular visitor here. So if you need my answer urgently, use the link on the left to drop me a mail.