Submit to high PR link directories in the appropriate categories.. and also submit articles to article directories
there is only one secret about toolbar page rank . the secret is getting from high pr and relavant sites
Are you certain about the "relevant" part. I know the link must be relevant for serps, but for PR (only) I believe inbound links is 100% of what Google uses to arrive and the PR number.
Get tons of links. Non relevant links also would help you to gain PR. But it's not as helpful in terms of search engine ranking as relavent back links.
back links,back links,back links...they are the only way,at least now.this will be the way until google changes the algorithm... but stay out from bad neighborhood and low quality links
More links... pagerank has always been about links (relevant or not). Probably shouldn't be focusing to much attention on that though, just build relevant backlinks regardless of PR.
Relevant links count, but you should be concerned about them if you want better SERPs.. they dont matter a lot when you just want a high PR!
Backlinks with anchor text that matches your optimized websites is the key to getting high page rank. Try to get links that are as relevant as possible to your keywords with well established websites.