Twitter now has a lists system in place. This allows one to establish a topic-focused tweetstream of just those whose Tweets are thought to be germane to a topic or focus or whatever list-grouping criteria one wishes to establish. The user does not have to follow the Twitter accounts on a list, which can help them "clean up " their individual "tweetstream".
Without lists, in order to follow someone I must add them to my list of those who I follow. This can make for a cluttered tweetstream. With lists, I can directly follow those whose tweets I wish to see show up all the time in my personal tweetstream, and I can indirectly follow a topic by checking in on a topic-focused list from time to time. My personal tweetstream stays less cluttered that way, yet I still keep track of issues I care about. For example, I am interested in following what is going on in Zimbabwe, but I do not want to add every source of intormation about Zimbabwe to my personal tweetstream.
If you are more interested in managing your own lists, you might find my Twitter List Management Scripts to be of some use. They are "shell scripts", meaning they run from the command-line and use bash and grep and other simple utilities. They are "no frills" tools, and still in pretty much an "alpha test" state.
Content on this site is provided by Prof. Jeffrey Sonstein under a Creative Commons License, by the Twitter service, and by individual Twitter members who are on one of my lists.
Want more information or to suggest a Twitter user to add to or remove from some list? Please contact me and let me know. Be sure to tell me who, what list, and why you think they should be added/removed.