Twitter Tips and Twittiquette

Having recently, finally joined the world of Twitter, I began to wonder what the proper “twittiquette” was. For instance, what do the “@” and “#” symbols indicate? Should I post in txtspk or lolspk or should I post in proper English? Should I post in third person or first person?

I have found a few articles discussing these questions. For instance, Grammar Girl posted some “Quick & Dirty Tips” about posting on “Tweeting.” I also found an interesting article on BrandFlakesForBreakfast offering some “Twittiquette” tips. Finally, I also found a small Twitter glossary with some information about specific terms and symbols.