I have a website which is mainly monetized with incentive CPA, most of the valuable leads (1$ for simple email submits) are only offered to US users. I get about 35% US traffic and 80% of my revenue comes from US leads. Should i change my webmaster settings to target US in order to achieve better rankings for google.com? i'm not sure if i should because i still get 20% revenue from international traffic, would it be wise for me to target US? all my keywords are in top 8 but i'd like them to be on top 3. Assuming i do it and regret my decision, will i be able to reverse the procedure or will i just lose my rankings?