Certain sites are linked often in posts. Specifically, Wikipedia and other StackExchange questions.
Around 90% of the time I enter a Wikipedia link, the title of the article is what I change my text too.
For instance, http://en.wikipedia.org/wiki/Foo could automatically change to:
Foo, Foo (Wikipedia page) or even Wikipedia: Foo
as opposed to:
Edit: Stack Overflow posts are now changing? Has it always been this way and I just didn't notice?