Social bookmarking

StumbleUpon: Social Bookmark Traffic Generator

[ad_1] StumbleUpon is a social bookmarking tool that allows users to share a website with others in their network. People use the tool to “stumble” on web pages recommended by others that match their personal preferences. How it works? StumbleUpon uses a “thumbs up, thumbs down” rating mechanism to form collaborative opinions on the quality […]