My Tweeple is a Twitter follower/following manager that provides a one-stop dashboard for relationship management. The service allows you, with a single click, to follow, unfollow, or block people. Export all friends to a csv file, suitable for importing into applications such as Outlook and GMail. Tag and capture comments about your friends and followers. Search for people by name, bio, location, tag, or comment.
It took me ages to find this app that does everything I need. Its genius. It has detail in all the areas that you want it to have. Unique in the marketplace and worth every penny I say.
And, I have to add, that I had a small problem with exporting and I contacted the owner on Twitter and he was absolutely brilliant at fixing the problem and communicating with me straight away - even with a time difference. Customer service second to none! Which is so important to me.
I use MyTweeple every week to make sure I'm following back the people I want to ... when people follow you, I think you have a responsibility to at least see if they're someone you'd like to engage with, and MyTweeple is ideal for managing followers in that way.