Geweb

<p>Use this plugin if you want allow users create their own sites based on your.</p>
<h3>Arbitrary section</h3>
<p>You can create your own HTML code of the form.<br />
Create file in your theme, put code from plugins/wp-auto-mu/geweb-mu/register.php to your new file and add_filter geweb-mu-register-path to rewrite file paht for the form.</p>


WPMU User own site

Plugin allows to create site on user registration in WPMU environment.

michael_porter

<p>Site Template is a plugin that allows site administrators to set up “site templates” for their WPMU or wordpress 3 (with networking enabled) sites.  When a user creates a new blog, he or she will be prompted with a list of site templates to select from.  Each template specifies the theme, theme options, widgets, plugins, pages, posts, categories, links, tags, menus, and link cateogries for the new site.</p>
<p>Creating a site template is a two step process:</p>
<p>First, create a site with the appropriate theme, theme options, widgets, active plugins, pages, posts, categories, tags, links, and link categories.  This site will serve as the template, and the site’s name will be the name of the template.</p>
<p>Second, an administrator needs to flag the site as a template.  To flag a site as a template the administrator needs to go to the admin blogs page (in wpmu) or the sites page (in wp3), find the site, and click on the “Activate Template” link in the rightmost column.</p>
<p>Once the template is created it will appear in the list of templates whenever a user creates a new site.  Site templates are live meaning that any changes are made to a profile’s template will be reflected in future sites users create with that profile.  Administrators can change the order templates appear on the “Site Template” page by clicking on the “Site Templates” link in the “Super Admin” (wp3) or “Site Admin” (wpmu) panel.   The “Site Template” page lists all templates.  In the right most column is the number of “children” of a given template or the number of sites that have been created from the specified template.  You can see the children sites by clicking on the number.</p>
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<li>added code to support templates when creating site at the same time as registering.</li>
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<p>.r387807</p>
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Site Template

Site Template is a plugin that allows site administrators to set up blog templates for their multi-site WP installs.

WPMU User own site vs Site Template