<http://schema.org/description>
"I used to be really annoyed with hashtags and thought to myself that I would never ever use it. However, after reading some stuff about it and actually trying it, I learned that its actually useful as soon as you remove all the clutter and only use it with a goal in mind. So all in all, not overdoing it is one of the keys as well."^^<http://www.w3.org/2001/XMLSchema#string>
<http://famousbloggers.net/twitter-hashtags.html>