You need to secure your connection. Contact your provider and get a password for your service! Many people forget this step.

I share my connection with my neighbor and I have never seen a difference in the speed. My guess is that it would take a few people connecting to slow it down so that you would notice.

I am not an expert on this topic but do have experience in this area...up close and personal.

My neighbors love me for allowing them this connection! I pay enough for it.

I will confess that if a new tenant moves in, I will not offer it to them. I like the sweet couple living downstairs right now. They are children of friends' of mine. Almost like family.