Right now I use tweetdeck which allows me to see everything as columns. So I can have a column for my timeline, column for hashtags etc.. But the problem is things like - http://askaaronlee.com/how-many-times-do-you-tweet-your-blog.... The notorious ones are inc.com, fast company or mashable which seem to repeat the same post 4-5 times a day. Plus with tools like Buffer, you can schedule those tweets to be made multiple times. What would be nice is a tool to fight back - say keep track of Duplicates and ignore them.