Seeing the start of a tag is alright since you can often
identify it by the id or some other identifying tag
e.g.
<div id="post-section">
</div>
However locating the closing tag in a long document is
still
very annoying (though you can try tracing it using good
indentation, e.g.
notepad++ shows lines between
indents,
so that's useful.
What would be nice is if there is a box shown
automagically next to each closing div tags (space
permitting), showing what the other tag looks like.
e.g.
<div id="post-section">
... while later
</div> [ id="post-section" ]
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If too annoying, just make it show on hover (over the
line, not over that tag... make scanning easy).