The site configuration still shows some default values that don't match the new site contents. Let's enter the appropriate site name and add site metadata.
Navigate to System | Global Configuration.
In the Site Settings section, enter the Site Name: CORBA - Collectors Of Really Bad Art. In SEO Settings section, select Include Site Name in Page Title: After. This way the site information will be shown in the title bar or the current tab of the visitors' web browser:
In the Metadata Settings section (you may have to scroll down to see it), add some text. The meta description is used in search engines result pages. In the Site Meta Description box, enter: CORBA is an international club of Collectors Of Really Bad Art.
Joomla also offers you the possibility to add site meta keywords. Most search engines ignore meta keywords these days, but it won't hurt to enter a few keywords that characterize the site's contents: bad art, ugly paintings, bad painting...