Getting traffic from the search engines does not do any good if they click the back button within a few seconds. You want targeted traffic that will hang around and read your sites content.
And there is no need to submit your site to google. With a few backlinks it will find you.
Link schemes - Webmasters/Site owners Help
Some link exchanges are ok, but doing them in excess has the possibility to landing your site a penalty.Examples of link schemes can include:
* Links intended to manipulate PageRank
* Links to web spammers or bad neighborhoods on the web
* Excessive reciprocal links or excessive link exchanging ("Link to me and I'll link to you.")
* Buying or selling links that pass PageRank