If you're using Twitter, chances are that you are at least aware of hashtags, even if you don't use them. And if you do use them, no doubt, you've sometimes felt somewhat overwhelmed and confused. Part of the problem is it's a free-for-all concept. There's no official body to register hashtags and everyone can use any words as hashtags, and as many as they want.
Through time, nevertheless, regular tweeps (people who tweet) tend to stick to a few they use for their own interests but still feel at a lost to what unfamiliar ones mean. Worse, for me, is the duplication of tags and the long ones, especially when abbreviation is possible. Bear in mind that each tag eats up on the 140-character limit that Twitter has!
A recent confusion on a tag was the impetus I needed to create an index, unofficial as it may be. Whether it works depends on the will of others to keep it going. It's done on Google Doc, free for everyone to update. As long as it's not vandalised, I'll keep it public. My wish is that educators would start streamlining hashtags and mark unused ones as OBSOLETE or REPLACED BY... so that the community will grow even more.
What's your opinion? Will you start using it and let others know, too?