I've been a member of LNE for almost 5 years and didn't even realize or notice this option was available: it was recently brought to my attention that there is a User Control Panel feature that allows members to "Manage foes," i.e. those posters that relentlessly badger, stalk, hijack and derail conversations, are rude and abusive, etc. and because of this behavior have caused you to personally lose interest in engaging with them, and might even be considering no longer participating in the forum.Foes are users which will be ignored by default. Posts by these users will not be fully visible.
I have been using this feature and it has helped make reading the threads and following the conversations a lot more interesting and all around enjoyable.
So, before abandoning LNE because of a real or perceived antagonism, consider using this option. On each ignored post you are given the option to display and read it if you so choose, or after taking a temporary break from the offending party's posts without having to completely leave the forum, you can undo the ignore.