Anyone knows when I click on Ignore, how to make that user completely disappear from the forum for me instead of seeing This user is currently ignored. text?
Not possible under the current forum settings unless if you persuade the Admin to do something about it (that is, if he can even alter it) or another option is to convince some geek who's good at code to create a script or add-on for that specifically? 
Been seeing a lot of tools getting created lately to ease the forum usage.