What’s the difference between PageRank and Toolbar PageRank?

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As per my knowledge Pagerank is very difficult algorithm. In short the more websites are linking to your domain the higher pagerank will your site get. This is real pagerank. It is updated in real time so if you get a few links pointing to your web today your real pagerank will be increased as soon as the spider will find these linksIf you install Google toolbar you will see the toolbar pagerank value. It is good tool for webmasters to get an idea how important is the visited website. Toolbar pagerank is updated only a few times a year. For this reason it may happen that new website has no toolbar pagerank but ranks well.