When a user doesn't want some automatic requests he sends to be completed
for example if you want no to see anymore some kind of geometry that prevents easy movements in an are
and provided you have the rights to do so, you can put a blocker in your avatar's blocker list to filter the
automatic queries send to the server and therefore you won't hear or see from that object
be aware that this is a way of reducing your capabilities in the virtual world
if you prevent requests to be completed by putting a blocker you may be able to cut yourself access to the virtual world
In that case, ask a super user to remove the faulty blockers by first building a new account or sending an e-mail.