If I understand you right you are wondering if social bookmarking is tracked by Google. and if that is your question the answer is yes. Because whenever you create a social bookmark you create a link back to your site. The thing with social bookmarks is all of them are not permanent so they are only good and countable as backlinks for a short period of time. This means the more you submit to social bookmark sites that don't keep them the longer they stick with Google and the other search engines.
