We are a bootstrapped startup that aims to change the way you bookmark sites. In order to remain bootstrapped, we just instituted a $3/mo subscription that gives users some perks.

We also launched public user pages where you can share your bookmarks and give users the link so they can search your bookmarked items. This is my page, for example:

http://stavros.historio.us/search/

We would, once more, appreciate your feedback!