well guys i'm a newbie here and i need some help plz can i really optimize a proxy website for search engines ?
You can optimize any website. The biggest factors are how time intensive is it going to be and how much money do I want to spend.
Of course you can. Unless you are not going to only put 'enter url here' and ads on your site, you can add some content elements and this help in some way.
and the content u wrote to ur proxy should be very unique and google should understand this site is different than other billion samples and order bots to crawl ur site properbly
Yes, you can - focus on getting good inbound links with relevant links - also links from authority sites would help