posted this on May 10, 2011 05:27 AM
This may be happening due to one of the following reasons:
We have a limit of 20 tags per presentation. If you add more than 20 tags, they will not be included on the file.
We show only the first 25 alphabetical tags that you have created on your profile page. If you have created a large number of tags, the other tags (beyond 25) will only display if you click on the more link.
If neither of the above cases are applicable, this is likely happening due to page caching. Wait for a few minutes and your tags should show up once you refresh your page.