Please do not donate to this unsophisticated ancient website.
Any respectable modern website would recognize modern convenient means of donation. I'll tell you what Wikipedia, if you publish your address, I'll send you a check. Remember checks? LOL!! Morons.
If u r bothered about look & feel, u might try
http://www.wikiwand.com.
By the way, the parent organization of Wikipedia, The Wikimedia Foundation do accept bitcoin.