<p>If you click on the faint gray "share" at the bottom right of an answer, a small box will pop up with a link highlighted.  This link is an abbreviated version of the full link (it takes up fewer characters, which is useful for pasting into comments or chat) and has your usernumber appended to the end.  If people subsequently click that link, a tally will be kept (secretly) by the SE system; when the tally reaches 25, you will earn the <a href="https://stats.stackexchange.com/help/badges/59/announcer">announcer badge</a>.  You can also delete your usernumber to save even more characters, but you would not progress towards the badge.  </p>

<p>The other way, which gets you the full link, is to navigate to the answerer's userpage -> answers, then right click the link to their answer and 'save link as'.  For the record, this will also not record progress towards announcer.  I used to use this method before I learned how 'share' works. It is sufficiently inconvenient that I don't see any point in doing it anymore.</p>
