What constitutes link abuse … I don’t want to run afoul of G but I would like to share traffic as much as possible as they are all very new

Here is what I have now

site A - http://www.motopixel.com/

has both front page links and RSS feeds for http://www.bytecamera.com/ and http://www.carpixel.com/

site B - http://www.carpixel.com/

has both front page links and RSS feeds for http://www.bytecamera.com/ and http://www.motopixel.com/


site C http://www.bytecamera.com/ has only a RSS feed for http://www.bytedvd.com/


site D http://www.bytedvd.com/ has only a RSS feed for http://www.bytecamera.com/

Have I already gone too far?

Can I do more?

Is there a better way to link your own sites?