find a post by the person you wish to ignore
left click on their username
click the user profile option in the drop down menu
when the new page opens up, you will see their name
under their name there will be 2 options
"send message" and "user list"
click user list
click "add to ignore list"
it will then ask you if you are sure
click yes
job jobbed

no they won't know they are on your list

hth

don't ignore me please