If you are like me, using del.icio.us for a long time, bookmarked more than 10000 articles and things over there and whole place is just looking messy, despite of strict rituals of tagging properly – you might just need this : deliGoo

Install this Firefox extension, and you can search not only your bookmarks and their descriptions, but the text of the pages that they point to as well.

deliGoo will analyze your del.icio.us account and create a Google Custom Search Engine, then use it to search the contents of every site for a match.