Your site may have been hacked. Check the site:balsamiq.com search for injected hacked pages. Check also for injected text being hidden by CSS, and try if you can to view your site through a proxy like HideMyAss, to see if they are showing you one version of the page and showing users a different one.
Also, if Google knows your site's hacked, there should be a message inside the Webmaster Tools account for balsamiq.com - check there for more information.
Update: Webmaster tools finally woke up and is reporting malware. I guess I should have just waited 30 minutes???? How can their outside systems be updated but not the admin pages they send me to in order to fix the issue? Grrr...
Comments
I used to see this type of problem at Google.
Your site may have been hacked. Check the site:balsamiq.com search for injected hacked pages. Check also for injected text being hidden by CSS, and try if you can to view your site through a proxy like HideMyAss, to see if they are showing you one version of the page and showing users a different one.
Also, if Google knows your site's hacked, there should be a message inside the Webmaster Tools account for balsamiq.com - check there for more information.
That's the thing, Google Webmaster tools says we're all OK! Maybe it just takes a while to notice internally?
Update: Webmaster tools finally woke up and is reporting malware. I guess I should have just waited 30 minutes???? How can their outside systems be updated but not the admin pages they send me to in order to fix the issue? Grrr...