I don't use social bookmarking, it has never appealed to me. Browser based bookmarking has always been sufficient for me, and I don't spend much time "browsing" the internet, I am typically trying to find something specific, so a general search engine is usually sufficient for me.<p>
Some features that might make me more likely to use social bookmarking: OpenID accounts, really simple and good search, RSS for tags (no doubt this already exists), syncing with my bookmarks on all the browsers I use and aggregating them in one spot, letting me save my bookmarks to a bookmark file readable by Firefox... thats all of the top of my head, although fundamentally I don't think they fit in my life flow :/
I use the new one in the Google Toolbar as it's a single button press (star) to add it. No dialogs or anything. I can't be bothered with tagging or confirmation dialogs. I just want to press a single button and have the browser remember it.<p><a href="http://www.google.com/support/firefox/bin/static.py?page=features.html&v=3" rel="nofollow">http://www.google.com/support/firefox/bin/static.py?page=features.html&v=3</a>
Most people I talk to (outside of the Web2.0 crowd) have never even heard of social bookmarking, so I think there is a great opportunity here waiting to be discovered. I want to hear from you guys what you like and dislike about what's available today. Especially from those of you who don't use an online bookmarking web site. Why don't you?
I applied with a "mainstream bookmarking" idea for YC about a year ago or so. PG sent me a one liner, which I'll forward along to you:<p>"how is this different from reddit?"
CoReap is one service that I've started using more frequently off-late. It combines social search and social bookmarking with a no-frills browser sidebar for bookmarks management and a browser extension for social search integration. See: <a href="http://www.coreap.com" rel="nofollow">http://www.coreap.com</a>
how far are you into the planning of this application? and where are you based?<p>i've been somewhat following this space. i agree there is lots of room for improvement, and i even think it's not saturated yet, that is if you have a flexible definition of a bookmarking application.