Just my 2 cents..
Upon first glance of both your site and your code, I’d say you’re optimizing for the word jackpotavenue not a real big search term..
The first word in your title tag as Elgoog pointed out is JackpotAvenue ..
your h1 tag needs some keyword help.
After that there are lots of places that you could be using keywords and aren’t ..
Starting with your top navigation menu:
Our Casinos Promotions Winners Beginners Guide Customer Supp. US Legislation
Maybe .. Casino Promotions – Slots Winners – Gambling Beginners.. whatever.. I’m sure you get the idea 
Highest jackpots – could be any jackpots, but if you use some strong tags, and the word casino, then your talking to google ..
Don’t overdue it… but get your keywords in there..use strong tags (b) italics (i)(em) .. lists.. underlines.. etc. …
I’d definitely switch up the alt tags a bit ..
Very Very nice lookin’ page btw
Good Luck