This can either be a software/script although web-based script is preferred. The script needs to be able to semi-automate the task of registering on a vast range of social bookmarking sites and submitting to them. Basically, everything apart from entering the captcha needs to be automated. Very briefly, there needs to be a front-end and a back-end to the site. Front-end needs to have clients enter their details to be submitted including the category topics and back-end the details are submitted under supervision of a manual submitter who keep entering the captcha codes. It's not only coding but the whole site needs to be designed as well. There needs to be reports generated on completion of the bookmarking showing where the bookmarks have been posted on each site.