Hi, I have heard that if you over optimize your on page then you will land up in plus thirty or minus thirty penalty in google (whatever they call)...what you guys think about it?Is it true....can any experts explain things about it..It would be of great help to me..
A +30 penalty would be nice to rank for some competitive keywords. The -30, -50, -100, -500, -950, etc penalties are simply myths. Normally the myth is spread when someone has a problem ranking for some keywords. However, they could have performed improper onpage and offpage SEO, have duplicate content, have a messed up robots.txt or htaccess file, etc. Sure, sites get penalized but I've never seen specific rank reductions. In many cases you can't find the site in the serps at all if it is indeed penalized...
To overcome it, you first need to analyze your site to see what caused it. If it is duplicate content, then either delete the content or block the duplicate sites from being indexed. It really depends on what your site has done to receive the penalty in the first please to really give you details on how to over come it. One thing that would be hard to overcome is that of mass link building in a short amount of time. Well not hard, it could just take a while unless you control the backlinks and can actually delete them.
I personally believe in -60 and -950 Google penalty, for whatever penalty you have got - watch closely your links.