how would one define credible linking?

What exactly does everyone mean by credible linking?

From my view, it seems we each have a slightly different idea about it. For 
me, I'd call a linking method credible, if it works in more than one app. 
For example, I do a lot of web work and I'm dissatisfied that Mozilla uses 
Xlink (an alternative is XSLT), Opera uses some CSS to make XML links work 
(no Xlink or XSLT), and in IE you need to use XSLT to get a link working (no 
CSS trick or Xlink). That, to me, makes each method non-credible/worthless.

Devon

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