Trending world wide and hash tag?

[Shoes]

What does it mean?
Whats all this hash tag business?
What does it mean is something is trending world wide?

[?]

are you talking about twitter

[Dark Phantom]

Hash tags are used to add categories to comments (in particular "tweets" using Twitter) and it basically helps define what the topic of the comment is about. It also helps you find comments about specific topics.

For example, if there was a tragic event, such as a major fire in England, you would use the hashtag #Englandfire in your comment/tweet.

If many people use the same hash tag, it means that the topic is "trending" worldwide. Basically, it means that its a popular topic and everyone's talking about it.