Do all of my backlinks get displayed along with the PageRank?
Google only shows the backlinks it has found and calculated for your pages that have a PR4 or higher. All links are included in the tabulation, however. Like the PageRank display, the backlink display on the toolbar is very misleading, and under-represents the total number of inbound links, making do it yourself PageRank calculations more difficult. All incoming links count towards your total, but lower level PRs (0-3) don’t count for much of that total immediately. They will probably add more PR later, however, as their own PRs increase, making all inbound links valuable. Keep in mind that theme relevant links from theme related pages provide more power in Google and the other search engines than unrelated higher PageRank links. Always remember that PageRank is only one factor in the search algorithm.