What is up with the # sign. I see it everywhere on the internet.

It is a twitter thing, it is called hashtag.

Hell I'm in my early 20s and I didnt even known this. I dont even know what a twitter acct is, Ive heard of it but never checked it out.

It helps the word or words "trend" online. Meaning if you put a hashtag before a word then it's tracked by the internet powers that be and then people know what is popular at that very second.

I thought it was only used on Twitter.

Article

It's a hashtag. It responds back to the item or person who you have hashtagged... if that makes sense. Say for instance, you Tweet something about Cafemom. If you use a hashtag, #Cafemom. You can then go to that word and read all the Tweets under #Cafemom. Twitter was amazing for us to have during all the storms this past season and last. We were able to Twitter about storms, what it was doing at our particular location, etc.. even when there was no power.

I often wondered the same thing texasgurl...thanks for asking. Now we both know.

I agree with all of the above ^