I'm working on a project now about 'tweets' and I need a short list of interchangeable names for a person that tweets. There are only so many times I can use the phrase 'Twitter celeb' without it becoming redundant. I've considered 'tweeter', but is that even a term or phrase that anyone would recognize? Ideally, these names/terms would be recognizable by a general audience. Any help on this matter would be appreciated.