Is the site quite new? It's pretty common for a new site to do well for a few weeks then disappear for a few months. But perhaps 4 pages of irrelevant links is now enough to be penalised. Interesting, because a lot of people have a lot more than that - many have whole directories of irrelevant links stuck on their sites. Could be a lot of penalties ahead.
You might get banned by google, but this happened to me a week ago and one of my website just disappeared from the search result then a couple of days after it's back in and even higher... Is your site new? If it's a new website... Then just give it time and keep on optimizing then you will be fine.
well , its 3 months old ... the good period start before 3 weeks ... if my site is banned ... then there must be no results when i use site:mysite.com right? but with site:mysite.com the results are all of my gages ... eaven link pages
I wouldn't necessarily say you are banned. I've had sites that I build hit the random "sandbox" when google indexes the pages, it jumps back and forth, and can do some strange things. One day it will be in the top 10 then gone. Just keep updating your site, and don't worry about google or you will be stressed out.