Q: I have a lot of websites stored in my browser that I'd like to be able to access them from other computers, share them with colleagues, and maybe even see what they're bookmarking. Are there any free tools that store all or some of your bookmarks / favorites online?
A: Yes, there are many. It's important to view this topic both from a productivity perspective as well as a search perspective.
1) As a productivity tool:
All the major search engines offer this, by the way:
But there are many independent ones (e.g., www.myvmarks.com). For a comprehensive list of these bookmark management tools, see http://www.allyourfavorites.com/Computers/Internet/On_the_Web/Web_Applications/Bookmark_Managers/directory.htm
In addition to using the default folder-based system built into traditional web browsers to get to your favorites/bookmarks, the advantage of some of these online tools is that you can find certain saved website links more quickly later by tagging them (assigning category keywords/phrases to each site that are logical groupings for you) initially when you add or import them.
2) As a search tool:
If you'd like to SHARE your bookmarks with others, and review their favorites? This category -- bookmarking tools with social networking capability -- is expanding rapidly, with hundreds of choices.
You may choose to use some of these not as bookmarking tools for yourself, but as search tools to see what sites others are bookmarking based on desired keyword tags, etc. This can help lead you to narrow niche portals, hot blogs from insiders or other experts, directories and other useful sites. Start with these:
To learn more about the concept, see http://www.allyourfavorites.com/Bookmark_%28computers%29/encyclopedia.htm (or http://www.allyourfavorites.com/Bookmark_manager/encyclopedia.htm - I think these two URLs are the same content).

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