30 bookmarks needed

Hello, I need 20 social bookmarks done. I will provide the titles and descriptions. These bookmarks MUST BE MADE AT SITES that DO NOT SHOW the date of submission. I believe Backflip and Folkd are good examples of this. I do not believe they show the date the bookmark was created. There are 4 URL's so that means you only need to identify 5 social bookmarking sites that DO NOT SHOW the date the bookmark was entered. Need this project completed 2 days after winner is selected worse case. Thanks,