Everyone has a story to tell. We use these stories as a way to communicate, populating social networks, and sharing information which makes the challenge of good storytelling, important. VisualFox takes on this challenge by exploring and developing new solutions for telling your story. We join you in a new era where customers are more than customers but part of the brand, where customers expect an authentic experience anytime, everywhere, and all the time. Welcome to the new web, a web about conversation, shared experience, and storytelling.

Drupal 6.x robot.txt

Historically drupal's files folder was installed at the root of the drupal installation and I think the rule do disallow /sites/ came from this era.

Following this thread:

Allow crawling of sites/default/files by search engines, don't disallow it in robots.txt
http://drupal.org/node/494462

and implementing some of the advice from this post
http://tips.webdesign10.com/robots-txt-and-drupal

This is the resulting robot.txt file - your mileage may vary - but works well enough for VisualFox and a couple of other site.