As others said put the link in the forum here or if this is not on the same niche then find a forum on the same topic. Submit your site to StumbleUpon in the correct category, submit to Reddit or a hundred other social media sites, Create a Squidoo lense with a link to your site. As long as you have good content Google will follow and index it very soon. If you have junk that is just a copy of other content( read PLR, articles form directories, etc..) then you will have a harder time and even a PR6 link won't get you indexed. Thanks