Would I get removed doing this? web 2.0

I want to register all the web 2.0 properties for a whole bunch of keywords before anyone else does it. So I was going to register them all and just put "coming soon" as the only text.

If I did this, is it likely that the site admins would remove me?

Is it better just to use one article till i am ready to create unique ones so that the web 2.0 sites I register have at least some content on there?

Any suggestions is appreciated

I wouldn't think so....because its your content that makes the site and you decide when its ready to be actually published.
The only reason they should remove you would be due to breaking there terms.
I would not publish it saying coming soon though. Just don't publish it until you have actual content up.