Disable highlights from some nicks
It is now possible to disable highlights from some nicks, per buffer, or per group of buffers (like IRC servers).
A new buffer property "no_highlight_nicks" has been added. It can be set easily with script buffer_autoset.py, see
/help autosetbuffer for example.
If you have already opened buffer, then script option will not apply immediately to buffers. Then you can use
/buffer command to manually set this property on a buffer, for example, to disable highlights from "joe" and "mike" on current buffer:
/buffer set no_highlight_nicks_add joe,mike
Update on 2010-12-02: this option has been replaced by "hotlist_max_level_nicks", see Max hotlist level for some nicks.