What this processes is that, besides the spelling advice arriving from the built-in dictionary, which aren't that great, you also get advice arriving from the network, during you enable the feature.
The network spelling advice are powered via the equivalent technology that powered Google Search's ageing "Did you mean" feature or the newer version which automatically replaces your question with the adjusted term.
The latest Google Chrome dev and Canary Builds as well as Chromium cooperation the novel feature, as Google Operating system signed, but alone the Windows versions.
If you're operating the experimental versions, you can enable network spell checking via right-clicking within any text container, choosing "Spell-checking options" and otherwise selecting "Ask Google for suggestions."
The network advice shall be spaced beneath the frequent dictionary suggestions. That may not be the greatest choice as network spelling advice are frequently better than the built-in ones.
One reason why Google hasn't done this sooner and why it's still not relying too much onto network spelling advice is the inherent delay within getting data from the cloud rather than consuming locally resources.
But whether there's one corporate that suspects within the cloud, it's Google, so the delay should be minimized via the moment Google Chrome 17 lands within the stable channel or, at the very lowest, within future Chrome versions.
There's another reason for Google's reticence, within order for the feature towards profession, Google Chrome posts anything you model towards Google.
That's not something that most civilians shall feel comfortable with, even whether Google assures towards anonymize the data and not consume it within any else way. This is the reason why the feature is not enabled via default and why it won't be any moment soon.