Some blogger owner said that GPT websites/blogs are not allowed by Google adsense, but i saw there are many GPT websites advertise their website in Google Adwords, and also there are some GPT blogs (or blog that GPT is part of their discussion) still using their adsense ads in their blog, is anyone can make clear about it? Note: GPT = get paid to; get paid to clicks, make offers, surveys etc.
Yes. You can use adsense on gpt sites. Just about any site with content can use adsense. Blogs are on of the most popular users of adsense. But you can't have a pay per click where you are paying people to click Google ads. If you had a survey site with articles about paid surveys you could definitely use adwords with that. I run a survey site. I have a blog on it that pulls newsfeeds from all of the popular market research panels. I use Adsense on the blog and also on another work at home blog.