I am setting up a business and am hoping to develop some software for it to sell. I realise I need to do some market research to see whether there is any demand for this, so I wonder whether I could ask for any feedback from you on what I am hoping to do, in the name of market research?

Thanks in advance:

It is a service aimed at the administrators of large websites. Lets say you have a commerical website that carries news, weather, and share prices. You get these feeds from an external company via XML, and this data is processed by two in-house applications before being fed into your content management system to go onto your website.
If this external XML feed or either of these applications fail then the content is going to stop updating on the site, but there will not be any errors logged on the website itself.

How do you detect this type of problem? Yes you could add logging to each of the applications and the feed, but surely it would be easier to have a single application that checks the content of the website and alerts if it doesn't update after a certain timeframe. Then you'll be able to identify where the problem is and fix it.

There are alot of website monitoring companies that check that your site itself is available, but none that I can find that check the content is updating, in this way.

I got the idea from the way I set up monitoring in a non-internet setup in my previous job - I've just ported the idea over to the internet.