<p>To expand on <a href="http://meta.math.stackexchange.com/questions/710/can-we-get-database-dumps/711#711">Anton's answer</a>:</p>

<p>Jeff Atwood <a href="http://blog.stackoverflow.com/2010/07/creative-commons-data-dump-jul-10/#comments" rel="nofollow">commented on the StackOverflow blog</a></p>

<blockquote>
  <p>We generally wait 4-6 months until a site has enough data to be useful.</p>
</blockquote>

<p>referring to the <a href="http://blog.stackoverflow.com/category/cc-wiki-dump/" rel="nofollow">cc data dumps</a> that already exist for StackOverflow/ServerFault/SuperUser.<br>
As I understand it, the Data Explorer tool Anton mentioned is based on these database dumps. It doesn't pull anything from the live StackOverflow database.</p>

<p>See this <a href="http://meta.stackexchange.com/questions/56300/when-will-stackexchange-sites-be-available-in-data-explorer">question on meta.so</a>.</p>