amityweb wrote:
probably wont be giving my linode logins to anyone else either!
In the linode manager you can actually create separate users by clicking on the "Account" tab and then the "Users and Permissions" tab so technically you don't have to give out your logins to any one, but you would have to find someone that you trust.
I would suggest looking at your traffic (assuming you have something like Google Analytics) and see what days/hours have the fewest people connecting to your site, then put up a notice scheduling the down time. Like dwfreed said, the resizing of a disk image usually takes about 10 minutes and is fairly painless.
Good luck and hopefully you find a chance to grow your Linodes!