Unwanted points

[galaxy3d]

I'm modeling some objects for a new project, usually I get my models from turbo squid or other sites, but this object needed to be modeled by me
Right now all is fine but I have a question for the community:

How does unused points can be deleted?
Every time I delete a polygon all points ghost points are there

Thanks

[Philipp]

You can do it in a very simple way. Go to Mesh menu and hit optimize under commands and all unused points will gone

ps: very interesting site here...