They desired the URL so they might include the post to their email newsletter using the Flashissue curation feature.
What appeared an easy demand ended up being much more hard given that Facebook does not make it obvious where to find the URL for post.
1. Go to your Facebook page e.g. https://www.facebook.com/FlashIssue
2. Click the Date Stamp of the post you desire to find the URL for
3. The post will fill as it's own page and you can copy the URL e.g. https://www.facebook.com/FlashIssue/posts/928107223872038
Once you have the Facebook page URL you can plug it into Flashissue and drag it into your e-mail.
If you are utilizing the Flashissue Chrome extension you can clip the Facebook page URL for a faster way to get it in your e-mail:.
What's more annoying is that there is no chance to find an RSS feed for all your posts on a Facebook page. It looks like Facebook once used this however withdrew it since it was being abused.
For the moment, you require to be satisfied with pulling individual posts as pages.
Thus the article What Is Your Username On Facebook thank you visiting from me hopefully can help you.