yes it is more safe here than your own website or blog ,
due to copyright laws , if you had not registered with any copyright office.
you have the full power to remove your hubs from here, upadating & deleting them.
if anyone copies your content & put it on their own blogs or other sites , you can make a complain of it to hubpages staff.
hubpages shares 40% of your traffic impression not 40% of you revenue generated through adsense.
it only benefits you.
i have never seen such a good website anyother on net ,
you can share your views with other members on forums also.
& you can get a huge traffic daily to your hubs.