• It updates the checkstyle/pmd/findbugs xml reports : it adds an attribute @author on each code vilolations. External tools can use this new attribute to improve their reports.
• It generates a blame report with some global statistics about developpers.

To use the maven blame plugin, you have to change the pom.xml of your project.
First, declare the codehaus snapshot repository :

<pluginRepositories>
<pluginRepository>
<id>codehaus-snapshot</id>
<name>Snapshot codehaus repository</name>
<url>http://snapshots.repository.codehaus.org</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>

Then, add the different reports(checkstyle,pmd,findbugs) with at the end, the blame one :

<reporting>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.codehaus.maven-blame-plugin</groupId>
<artifactId>maven-blame-plugin</artifactId>
<version>1.0-SNAPSHOT</version>
<configuration>
<enableCheckstyle>true</enableCheckstyle>
<enablePmd>false</enablePmd>
<enableFindBugs>false</enableFindBugs>
<fullBlame>true</fullBlame>
</configuration>
</plugin>
</plugins>
</reporting>

Endly, launch the site generation :
mvn site

Maven Blame connects to your svn repository and it may need to authenticate. Authentication information can be indicated via maven properties : maven.scm.username and maven.scm.password.

For more informations :

Maven Blame Plugin Web Site
Example of blame report
Example of checkstyle report xml file