I need a little help with twitter?

[Morgan]

Okay so say I tag someone in one of my tweets (@Morgan) will it show up on THAT persons stream when they log in? Even if they DON'T follow me? Is there any way I can send a message to someone on twitter or like talk to them, if they don't follow me?

[Jackie Tino]

you can talk to anybody who doesn't follow you, but not through direct messages. it won't show up in her homepage live stream, but it will show up in her @replies when she logs on and looks at them.