I really hope this feature gets used with the utmost discretion. This forum is here for the open discussion of varied ideas and opinions on the common ground we all share and that is being share holders in PTSC.
For one thing as someone has already noted, those who are not logged in can't use it so those just "lurking" are going to see all views and if you have someone on ignore thats posts questionable content you won't be able to see it to respond to it thereby possibly keeping the record straight for the lurking public.
To each his own but I have seen what happens with the ignore feature on other boards and I for one have always ended up discontinuing it's use.
That's my 2 cents on that subject