Your MobileMe account includes space for your iDisk storage (where websites you publish to MobileMe are stored) and your MobileMe email. You can buy more space if you need it.
If you or your visitors see a message saying that you’ve reached your data transfer limit (also called bandwidth), you can increase your limit. Increasing your data transfer limit makes it possible for more people to view your website and download files from it at the same time.
When you buy more storage space, you automatically increase your data transfer limit.
Select the name of a website you’ve published to MobileMe by clicking it in the sidebar on the left of the iWeb window.
At the bottom of the Site Publishing Settings window, in the iDisk Storage section, click the Buy More button.
If you’re not already logged in to your MobileMe account, you are prompted to do so.
Click the Upgrade button in the MobileMe Account pane that opens, and then follow the steps to purchase more storage.
You can also buy more space directly from the MobileMe website.