Really need your help
I was wondering, is there any google analyzing tool to check what's wrong with my site http://www.supremedeal.com.
All the time google is finding something that it doesn't like, and it reflects on my ranking. Once I've even had PR5. Then it was downgraded to PR3, then PR4, and then tatally disappeared from their search as www.supremedeal.com
The funny part is I'm still in their search as supremedeal.com (without www).
Definitelly I was doing something within that period, but go guess what exactly I was doing wrong to scare google. I changed some keywords in meta tags, put sitemap, added some pages to the site, of cause I changed some contents ( I have a shopping site, so I have to do that regularly). I also did some link exchange, etc. Another words, I did a lot of things. Very possible google considered something as spam and punished me, but trust me, if something wrong happened, it was not on purpouse.
Now I'm facing the google ignorance. But why
I've already removed my sitemap, so far it doesn't help.
I really, really, really need your help to analyze, what should I do to fix it, and get bak to google.
Any tools, ideals, etc would be greatly appreciated.
Have a great day,