here today- gone tonight?-back tomorrow

[trafficschool]

ok, here's my frustration, hopefully someone can explain what's going on! my website www.cheapfloridatrafficschool.com appears in Google's search results every morning. by the afternoon, the site cannot be found! the next morning, it's back again, by the afternoon, gone again! This has been going on for about a week with this site. Lycos, MSN, entireweb seem to carrying the site just fine, with a reasonable placement for most of my terms, (cheap florida traffic school, 4 hour florida traffic school, 8 hour traffic school) but moderately well with the main keyword (florida traffic school) anyways, has this happened to anyone out there? how do i get my url to stick!?- and Yahoo- never lists it. I looked through the search engine guidelines and I don't seem to be in violation of any of them! AGHHH!