Twitter Lists may not be popular, for exactly the reasons you describe, but they're really useful for two purposes: if you follow a LOT of people (for whatever reason), you can use Twitter for 'people whose posts I actually want to read' and if you use it for news consumption, you can make lists for that. I use it especially for the latter; being someone who follows iOS jail breaking, 99% of the time, Twitter is the original source for all of the news related to that.
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Twitter Lists may not be popular, for exactly the reasons you describe, but they're really useful for two purposes: if you follow a LOT of people (for whatever reason), you can use Twitter for 'people whose posts I actually want to read' and if you use it for news consumption, you can make lists for that. I use it especially for the latter; being someone who follows iOS jail breaking, 99% of the time, Twitter is the original source for all of the news related to that.