YJSG Framework Logo Remoral

Hi, I'm looking forward to use youjoomla templates and extensions to develop my commercial web site. I want to remove the copyright and YJSG Framework logo from the website. It is stated that the copyright information can be removed by paying extra fee. In the FAQ section it said:
1.
"If you are using our framework for any commercial offering, you are required to retain the “Powered by YJSG Framework” logo on any public display of your YJSG templates."
and
2.
"The “Powered by YJSG Framework” logo and the link to YJSimplegrid.com must remain displayed in the site administration area on any commercially offered YJSG-based template."

Q1.What is the definition of commercial offering? Does building commercial website belong to so-called commercial offering?
Q2.Can I remove the logo from the public pages and only show them in site administration
area?

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What is your CMS version?: Joomla 1.7

MySQL Version: 5.x

PHP version: 5.x

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Are you sure your are posting in product assigned forum?: Yes

What is your CMS version?: N/A

MySQL Version: N/A

PHP version: N/A

Link to installation: N/A

Have you edited any files? If yes tell us which ones.: N/A