Losing my tweeple

I didn't realize how easy it is to form significant contacts on the internet.  A few months ago I started a twitter account and a few weeks in a fellow twitterer started following me.  I have gotten really used to his posts and valued the funny things he said.  A couple of days ago, I snapped off a couple quick responses that I realized after the fact were probably too sarcastic and that sarcasm doesn't translate well. As soon as I realized this I tweeted off an apology.  Nothing....... days without a tweet from my fellow twitterer.  Finally I went directly to the profile page...clicked on the follow button.  NO!!!! I have been blocked.  Maybe it's really not personal, but it reminds me that the interactions online can be as valuable as the face to face ones but are even more fragile, one misguided comment can lose a friend.