Hi I have a website and it ranks very well in all Googles, including google UK, Australia, India and so on. Except one google: Google.com or google USA. Does anyone have any idea why? I'm ranking on first page for very competitive keywords. But on google.com I'm like nowhere.
Well, ranking in .com is a bit more difficult than ranking over the .in or ...... I would say keep the work up you will be going to ranked .
Quite simple really - as the others have observed the ranking is based upon location. On Google.in, .co.uk, .com.au you are battling against websites presented on that particular local level, while ranking on Google.com means you are up against all the websites out there on a global scale. As you continue to grow and get better optimized, you will have better results on the .com also