get XML sitemap module for your Drupal
http://drupal.org/project/xmlsitemap - XML sitemap

/admin/build/modules
enable
XML sitemap
XML sitemap node

/admin/settings/xmlsitemap/settings
Advanced settings

/admin/content/node-type/page?destination=admin%2Fsettings%2Fxmlsitemap%2Fsettings
XML sitemap
Inclusion:
Included

/admin/content/node-type/webform?destination=admin%2Fsettings%2Fxmlsitemap%2Fsettings
XML sitemap
Inclusion:
Included

/admin/settings/xmlsitemap/rebuild
Rebuild sitemap

Links
www.google.com/webmasters/tools - Google Webmaster-Tools

get Google Plus One module for your Drupal
http://drupal.org/project/google_plusone

/admin/build/modules
enable
Google Plus One +1

/admin/settings/google-plusone
Display the button on these content types:
enable
Page

Display the button in these view modes::
enable
Full node

Include count?:
No

Size:
select
Small (15px)

Optional wrapper with CSS:
margin: 4px 4px 14px 14px;float:right

/admin/user/permissions
google_plusone module
view google plusone
enable
anonymous user
authenticated user