I have a couple of doubts / questions / ideas related to *robots.txt*:

1. Can we deny website for all bots except for chosen ones in order to
tell other bots not to crawl site:

```
User-agent: *
Disallow: /

User-Agent: Googlebot
User-Agent: bingbot
User-Agent: Slurp
Allow: /person/
Allow: /products/

```
2. Can we deny whole site and then just specify list of pages we want
to allow for indexing like in example above? I do not want to give
away URLs that I want to exclude from crawling, as this information
can be used against me.
3. Note that we do not have `Allow: /`, so will
bot be able to access home page?
4. In example above, will `Allow` be
applied for all three user agents on the list or `Allow` needs to be
pasted under each user agent?

```
User-Agent: Googlebot
Allow: /person/
Allow: /products/

User-Agent: bingbot
Allow: /person/
Allow: /products/

User-Agent: Slurp
Allow: /person/
Allow: /products/

```