Some time ago Microsoft launched Bing "the second largest search engine" at about 8% of the traffic with "Google" in the first spot at 87% of the web SEARCH traffic (not email or anything else). The launch was very "Microsoft"y, with lots of advertisements, marketing campaigns, heavy blogging etc etc. This is in stark contest to Google where they
silently slip out code, probably write a couple of blogs and then you have the millions of technology writers like "tech-crunch, reddits or read-write-web" each claiming that they found the feature
first and effectively doing the marketing themselves. The only product that Google "sorta" advertised was the "Chrome" browser where they even put a download link to the
supposedly fast browser Chrome in their Google search home page.
I don't know which kind of marketing is better "subtly-put-the-product-and-let-users-discover" or "bang-flood-the-user-with-here-you-go" type of marketing but this MS-Google war is good to watch.