Here's a neat trick I bet you may not have known about. Using the Spotify URI link it is now possible to link not only to a given track, but to a given point of time within a given track - way cool.
This is accomplished deceptively simply by adding the minutes and seconds of offset to the end of the Spotify URI, like so:
spotify:track:5o4KCeIYDOyL7JxgDUgvS5#8:23