I have 2 sites Site1: PR4 Alexa: 13k (Blogging Community) Site2: PR4 Alexa: 32k (Blog) I want to Add all posts from Site2 to Site1 and to link all posts on Site2 to Site1, Will I get more PR and won't google ban me for this kind of activity ?
I didn't mention that I want to rise PR on Site1, and posts on Site1 won't link back on Site2 (only one way linking).
If your both sites hosting on same IP then it's not good but If you want to promote site 1 and your site 2 is not good or you don't want to promote your 2nd site then you can use 301 redirect on your 2nd site it will increase your traffic and rise PR also..
It is not good idea to cross link..by doing this, it becomes case reciprocal link building and google hates reciprocal..