Its effects are not minimal. However, the studies show that people only benefit from creatine if they are deficient in it in the first place.
If you are deficient, which most people find they are, creatine will help you work out longer and harder thus increase your strength.
It was also noticed that the benefits of creatine seem to climax, level off, and then begin to decrease with continued use. With that being observed, creatine should be taken and then discontinued every few months to avoid the decline.
Accurate information off the web can only be found in certain places. You should not trust what you read unless the source is reliable and confirmed.