Mary - I can really sympathize.
I have three sites for my town - South Padre Island, Texas - spionline.com; spirooms.com and spibreak.com. Spionline is the main site and has _always done well on Google - top three on a south padre island search. Just in the past three days I dropped down to 10-13. Stupid Brownsville airport page ranks higher than me. I have tons of useful, original info, I update every day or three and I know lots of relevant sites link back to me. What is going on? Google used to love me and now it is stabbing me in the back.
I feel like I have been struck down by the gods for some offense I cannot begin to fathom. How can I fix this when I don't have a clue what I am doing wrong?
It is very hard not to take this personally....

Lucinda