>I believe Michel is wrong here, even if he implemented it as such. By putting a person into the twit filter you're now violating his freedom of speech rights.
How would that violate the freedom of speech? That is like saying that Google's "SafeSearch" mode violates freedom of speech.
Let's assume I have you on my twit filter. You can publish whatever you wish, and I can choose to read it or not. The twit filter helps to select messages that I wish to read. Others can still read whatever you write.
In the case of Google's SafeSearch, I can turn this feature on or off, depending on what information I am searching for.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)