Social Bookmarking Toolbars: The Solution Please...

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I like several social boolmarking sites like stumble upon, delicious and a few others. The problem is that it seems that each one of them requires that you install their toolbar in order to really have them work/available when you want to access them. I use social bookmarking for personal as well as business use, therefore, I need to be able to post on different bookmarking sites to share with a wide range of individuals. So my question is: Is there a way to parcipate in 'multiple' social bookmarking sites with just one toolbar? I just can't install ALL of them in my browser...it's too cluttered and eats up much needed memory. Thanks!