I don't think there is an issue with Google indexing, they index my/our servers just
fine.
As Brian already wrote, a
http://ampr.org/robots.txt file should have no effect on that.
Besides (at least in the current version) there is nothing in that file that would prevent
such indexing
aside from a /wp-admin/ directory.
What you need for Google indexing is links from other sites, that are already being
indexed, that point to you.
And some patience. It is not like a newly crawled site will appear in the index the next
day. Or even the next week.
(maybe they do some re-crawling to avoid indexing scams and other malicious sites)
Rob