Atniz post a good article about passing page rank from her sidewide using Top Commentators and Top Droppers widget. If your blog have 1000 links and you have Top 10 Commentators widget showed sidewide. You are giving away 10,000 links at one time. She also said, you should minimize outgoing dofollow links and get more incoming dofollow backlinks.
In essence, Google interprets a link from page A to page B as a vote, by page A, for page B. But, Google looks at more than the sheer volume of votes, or links a page receives; it also analyzes the page that casts the vote. Votes cast by pages that are themselves “important” weight more heavily and help to make other pages “important”.
PR is decided by how many links is linking to you. The quality of the PR it pass is determine by the number of outgoing links from that page. Your non home pages are linking to home page, that means they are giving your homepage PR too. If you have many links linking outside from that page, you only pass little PR.
Any outgoing links to other website should be placed in your home page to maximize the PR passed from your non home page, including links to your twitter, affiliate links, and facebook account. To only show content for the home page only, you can use:
<?php if (!is_home()) : ?>
Code to show here.
<?php endif; ?>