Hash tags allow people to easily search for key terms. It's kind of like tagging a photo on flickr or a post in your blog, but you do it inline using the # key.
Use the #tbex tag to mark your tweet as something of interest to travel bloggers.
Follow the #tbex tag on twitter search. >>
Use the #twchat tag to chat about travel writing on twitter. All the cool kids are doing it.
Follow the #twchat tag on twitter search. >>