. - . , , , URL-, http://mydomain.org/, , #top #. javascript:void(0) . , javascript html.
How to answer your main question: it doesn’t hurt to have # in the URL if you do not use any special logic for working with anchors. If you click the # link in the document, it will redirect you to the top of the page. Therefore, if you reload the page completely, you will still be at the top, so it won’t hurt if IE decides to add a hashtag.
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