Comments on the website lose their formatting. All readability is now gone.

I posted a comment on a page (http://www.shapeways.com/model/63055/logo_brangingiron.html) that has some 'returns' (to make paragraphes for more readability). I'm not sure if 'returns' is the good word, but I mean a white rule in between to sets of text.

Anyway, all these white rules where gone when the comment got posted and now all readability is gone. Got some url links to pictures in the post as well, but those are very hard to be seen and not even clickable. Another things that I think that must be enabled.

Could you guys fix that the format of the text also got posted instead of plain, unformatted text?