I use Chrome on my Windows machine, and got it working fine on the latest 64-bit Ubuntu build.
I use Chrome's 'Search Engines' feature rather than bookmarks as they allow 'keywords' which I use constantly.
I discovered that under Windows I could copy the file from 'C:\Users\[username]\AppData\Local\Google\Chrome\User Data\Default\Web Data' to another machine with Chrome installed and all the 'Search Engine' customizations would transfer.
However I cannot find a synonymous file to overwrite on Ubuntu's Chrome install. (I searched the file system as su for "Web Data" - nothing). I found some Chrome files at opt->google->chrome, but that's it.
Thanks for any ideas. (Also I just noticed that when I try to select a 'prefix' for this all the options are blank - Chrome is in alpha