I removed a few people from my livejournal "Friends" list. I removed them either because their posts were uninteresting, or they were not posting at all for long periods of time, or for a myriad of reasons.
Realize that I do not use this list to reflect who is a friend or ally, and who is not. It's simply a bitmask representing both who has permission to view the private posts I don't want the general public to be privvy to, and who appears on my default friends view. Don't view it as a change of friendship or enemy status, simply that if you don't share your dirt, I won't share mine. Blackmail only works when it's bilateral.