You could right click on the number in the top right of the post and save the link to your favourites/bookmarks, or even save it to a shortcut on your desktop. But the link will take you directly back to that post.
EDIT: Example - "http://www.polyamory.com/forum/showpost.php?p=137154&postcount=2" would take you to this post right here. =]
[Insert witty comment here]
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Do send a message in your request saying who you are and that you're from this forum. It will help me filter out any spam requests.