Hoping this one gets past the censors around here:
I have finally had enough of trying to keep my YJ libraries in sync via
dotmac. I have been using YJ for years, across half a dozen machines, and
syncing has worked most of the time, but inevitably over time the libraries
would get out of sync, requiring a deep reset of dotmac, a process that
takes at least a few hours to complete. I "fixed" syncing a few weeks ago,
only to have it get fracked up again this week.

Today I tried out Florian's method of syncing via dropbox, and I can verify
that it does work. Syncing is rapid and reliable (faster than dotmac too;
changes appear within minutes.) Until BB comes up with a robust syncing
method, this is what I'll be using. (I suspect it wouldn't be too difficult
to build Dropbox syncing into a new version; 1Password has recently been
updated to sync over a variety of DAV drives, and is much more reliable as a
result.)

So far, the only drawback I have found with this method is that you MUST
quit YJ before leaving a machine to work on another. If you do not do so,
the library is left in a state that causes the second copy to give a
"Yojimbo is already running error" when opened. This is definitely an
annoying bug, since if you walk away from an open YJ library that is on a
remote machine, other copies will be inaccessible until you can return to
that machine and close it. If anyone has any suggestions on how to avoid
this, please let me know.

Here is the method in full. (YMMV, caveat emptor, yadda yadda):

1. Quit YJ and backup your complete library on each machine. Dragging the
Yojimbo folder (or Option-Dragging to duplicate rather than move it) from
Home/Library/Application Support/ to the Desktop will suffice.

2. Turn off YJ syncing in the dotmac or MobileMe panel on each machine.

3. Make sure that Dropbox is installed and running, and in its default
location. (at the top level of your Home folder).

4. Open Terminal on the machine that has the full library (if they are all
identical, then any one of them).

5. Run the following commands on that machine:

 mv ~/Library/Application\ Support/Yojimbo ~/Dropbox

ln -s ~/Dropbox/Yojimbo ~/Library/Application\ Support/

6. Let Dropbox sync the new items. Depending on the size of your library,
this could take awhile.

7. Start YJ and confirm that the library is working and full.

8. Quit YJ.

9. On each OTHER machine, open terminal and run this command:

ln -s ~/Dropbox/Yojimbo ~/Library/Application\ Support/

10. Make sure that Dropbox has synced the YJ library on that machine fully,
then open YJ to test it out.

11. Quit YJ, and then move on to the next machine.

I hope this is helpful to some of you, and many thanks to Florian for coming
up with this in the first place.

Andrew