I need a help about the robots.txt .. namely i want to say allow all bots except these three bots but i have no idea how. i.e. User-Agent: * Disallow: this will allow all the robots now if i add this: User-agent: Zao Disallow: / will that prevent the Zao bot to crawl my website or when it sees the first lines will start to crawl ignoring the lines below? Thanks,
User-agent: Zao Disallow: / That would prevent only the Zao useragent bot from crawling\indexing your site.
Even if i have allowed all bots (useragents) to crawl my website entirely ??? Means i want to allow all other bots except few of them? Is this correct way?
Yes, that would be the correct entry. www.wikipedia.org/robots.txt gives a great example of robots to not allow to crawl your site.