Hi,

It isn't necessary, but if you really want to ensure that every image is indexed by Google, then it will be beneficial to do this otherwise you might not have them all discovered simply by crawling.

-Andy

Yes, this will help Google when crawling them as it will give them additional info.

-Andy

Hi  Lily,

I haven't used that myself, but this is the one I like to use - and it's free up to 3,500+ pages (it's dynamic and can be as high as 4,300 pages free).

I would be trying some of the other sitemap generators first to see if they report back the same issues.

-Andy

Absolutely agree with James - the businesses are just too different to be on the same domain. If I were Google looking at a site that offers wedding photography and then logistics, I would wonder which one it is meant to be.

Some businesses can carry this off if they are sufficiently similar, but not in a case such as this.

-Andy

There are no others that will really use it - assuming you aren't talking country specific search engines such as Baidu.

Once you submit it to Google and Bing, that is pretty much where you organic traffic is going to come from.

-Andy

Correct - Bing and Google are as far as you need to go

I do know you can submit to Yahoo but don't know anyone who ever needed to do that.

DuckDuckGo crawls other search engines to gather its data, so nothing needed to be done there.

-Andy

Hi Christian,

It's a little difficult to say what might be going on without being able to actually see the site. You are welcome to PM me this or post it here and I will gladly take a look for you.

Should I fear that this will harm my SEO efforts? It all depends. If your site has indeed been hacked, you need to find out what has happened (and how it happened). What did you build the site in?

-Andy