Sorry, I don't think that can be done. It's all or nothing as far as synchronizing bookmarks.

I've read that Xmarks has the option to assign bookmarks to "synchronization profiles". You could then have one profile for "work bookmarks" that is synchronized across many computers or even separate firefox profiles while a profile for "personal bookmarks" may be synchronized with other computers.

The closest thing Firefox synch could support is creating separate firefox surfing profiles and synch accounts for each set of bookmarks you want to synch. You could then select from your profiles using the profile manager (make a shortcut to firefox that launches firefox with the -p or -profilemanager option (both work) "C:\..... firefox.exe -p". It's less convenient, but could work.

 Ultimately, I'd love it if firefox would just enable synching bookmarks with certain tags (tag a bookmark work, it gets replicated on all firefox synch accounts with the work tag).  People think in folders, but tags would be even better imho.

What I would really like is the ability to select a folder in Bookmark Organizer and select "Do not sync to this computer". Then, you would see it in Bookmark Organizer as an empty folder marked as "Ignored by Bookmark Sync". Then, if you want you could select it and enable sync again.

I second the motion! Please provide us this functionality, Mozilla! Without it, it's rather useless to me.

Add me in on this one; 'sync profiles' a la Xmarks. I'd use Xmarks, but they just don't seem to be able to manage all common browsers: I've had hundreds of bookmarks/favourites duplicated and many failed updates. Even paid help support can't solve Xmarks, so I'd settle for profiles in Firefox alone. 'Sync Profiles' please, Mozz'a.

You could have a bookmark for an HTML file with the same name and location on the home and work computers. Then "private bookmarks" could be placed in that HTML fie.

OMG tags!! that is brilliant, I never thought of that but now I want it. I could sync tagged book marks, and tagged TABS from two computers, and best of all, I could search my browsing history based on tags! I could pull up every page I ever tagged as "whatever" with a single click! Is there any browser that does this? It's close to current book mark system I guess, but you could deal with one web page having multiple tags easier than putting multiple copies of a bookmarked webpage in different named folders.

Anyway, I'm in the same boat as the first poster, don't want 100% of everything from both computers synced, really how many people DO?

Yeah, a blacklist for tags would be best.