Hi,
Old and wise I suspect, just follow my screen shots.
I have several gmail logins. Is this where the bookmarks are coming from?
I don't use Google Talk but can't see why you would be getting multiple bookmarks as this is something you have to create yourself by adding them. Unless someone else is using your Mac and account.
1) Screen shot 1 ( J
ust click them to view full screen ) shows you how to access your bookmarks just open Safari and click the little book.
2) Once done as screen shot 2 shows all your bookmarks will open in a grey box on the left of the screen.
3) To delete a bookmark right click it and choose delete from the drop down option box as my screen shot 3.
Is this any more help?