Putting special characters in the title should have no adverse effect on the layout or functionality.
Special characters in the post title have been known to cause issues with JavaScript when it is minified, especially in the admin when editing the post itself (ie. issues with metaboxes, media upload, etc.).
This post has no title, but it still must link to the single post view somehow. This is typically done by placing the permalink on the post date.
Super/Duper/Long/NonBreaking/Path/Name/To/A/File/That/Is/Way/Deep/Down/In/Some/Mysterious/Remote/Desolate/Part/Of/The/Operating/System/To/A/File/That/Just/So/Happens/To/Be/Strangely/Named/Supercalifragilisticexpialidocious.txt A few things to check for: Non-breaking text in the title, content, and comments should have no adverse effects on layout or functionality. Check the browser window / tab […]