My site, www.leaffilter.com, previously ranked #1 for searches of "leaffilter" and "leaf filter". Today the #1 ranking for "leaffilter" with Google is gone. Well, it's not gone on all internet connection. At home the #1 ranking is in place. At the office computer it is not anywhere near page 1.
I'm testing searches logged in, not logged in, cache and cookies cleared, different browsers.
Other, secondary pages, are appearing on page 1. It looks as if the homepage is just no longer indexed...but not on all internet connection.
Any ideas what is happening? Does anyone have any troubleshooting tips?