Wossis is completely free!
At least, it is to you. It's a not-very-expensive hobby for me, as long as I can convince myself my time is free!
What can I do for free?
I want to give you money anyway!
You are a philanthropist and a very special person. Donating to wossis is the best possible way to show that it's what you want from a flashcard-viewing site!
What is not free?
Adding your website to the 'whitelist' of sites that can be linked to from flashcards and cardsets on wossis.com is not free. Charging for inclusion on the white list is a compromise between limiting spam and encouraging contributions.
*While you can include the URL (Internet address, like http://wossis.com/) of your own site in comments, card captions, and on your user page, it won't be a clickable link. To be able to include a clickable link to your own site (or a friend's!) you'll have to either provide us with the name of a site that has obvious (to us) philanthropic value (like Wikipedia or most spam-free open source software sites), or pay.