You seem to be looking for some kind of short-cut. I would suggest you try to broaden your perspective on the need to amass incoming links.
The best tool (that the search engines prefer) for link building is to create web content that is worthy of being linked. Always try to seek your incoming links naturally. This may not amount to thousands and thousands of links but the links that you will acquire will be valuable (rather than being practically worthless).
Engaging in the trendy link building schemes (link swapping, directory listing, forum posting, blog spamming, social networking spam etc.) often proves to be ineffective in convincing the search engine of the importance of your web content.
Be exposed in various forums and blogs related to your site and maintain good relationship within its members to make your site credible and be trusted by others. This way, you could easily gain link popularity that would lead you to quality backlinks and at least get noticed and improved search engine rankings.