If certain tags are being stripped, then you're probably in a position where arbitrary input isn't desirable. If this is an input to a website, for example, th

If certain tags are being stripped, then you're probably in a position where arbitrary input isn't desirable. If this is an input to a website, for example, the webmaster really doesn't desire everyone to be able to reinvent the blink tag, or be able to express everything in rainbow fonts. In which case Markdown shines, for it's ability to express simple markup, that can be safely expressed.