Blinklist is a nifty little bookmarking site that requires simple registration to utilize its best features but after registering, you can easily tag, categorize and even "star" bookmarks. The site also features public and private bookmarks and an import for Firefox and IE. No Safari import, as far as I could tell from my short visit to the site. Unfortunately for us Mac users, the blinksite bookmarklet, a crucial element for using the blinklist site, doesn't appear on the step 2 page, or on the blinktool page when using the site in Safari. The blinktool download link does appear when I visit the site using Firefox though.

Here's the link.