Google's launch of Sidewiki is a significant event for digital marketers, because
Sidewiki potentially allows anyone to publicly comment on any site or page that is
not SSL encrypted, and those comments will appear alongside a brand's own website.
You could think about it as a comments section on every site, whether you want them
or not. This has everyone trying to figure out the implications on SEO strategy and
perhaps more importantly on how a company can control its online assets.
There
is a lot yet to be learned and bugs to be worked out, and consumer pentration is
certainly still low, but Sidewiki comments are now a reality, and there is much we
can learn already.
Here are five examples of Google Sidewiki comments on
brand sites in the retail, pharma, electronics, and auto insurance categories. These
examples offer an early glimpse into how both brands and customers could use
Sidewiki:
Auto Insurance Sidewiki Example - Nationwide
InsuranceNationwide Insurance has "claimed" their Sidewiki, which
allows them to own the top listing within the Sidewiki on their page. They've used
it to highlight Nationwide's service offerings and costs savings.

Google Sidewiki Example
Interestingly, Google has not formally "claimed" their Sidewiki comments, but
their VP of Search Marissa Mayer, has still managed to get the top listing;
though the content of her comment is mostly superfluous information about
Google's holiday-inspired logos. (Maybe this is Google's way of promoting an
image of good-natured benevolence in the face of the wide-spread fear associated
with Sidewiki.)

Consumer Electronics Sidewiki Example: Apple
The top-comment on Apple's Sidewiki is from a student who offers a fairly basic
company/site description. What's interesting here is that the second-ranked
comment is less than flattering to the company and is actually voted as not
useful by more people than voted it as being useful, raising questions around
the algorithm that Google is using to determine the quality of comments.

Pharma Sidewiki Example - Viagra
Viagra's first comment was posted by John Mack of Pharma Marketing blog,
where he wrote "Viagra is bogus". Since then, however, additional comments have
been posted and voted higher in the comments listing than his original comment.
John has since countered back with another post, again not flattering,
criticizing Pfizer's use of branded reminder ads on Candadian TV; and this is
now the top-ranked comment. Viagra has yet to claim it's Sidewiki.

(Note : the above screenshot shows the second page of Viagra's Sidewiki
comments.)
Online Retailer Sidewiki Example - Amazon
Amazon's Sidewiki offers an interesting peak into how Sidewiki comments can be
used for good: the top-ranked comment is actually a tip from a user informing
visitors that wishlists and shopping list information can be found by clicking
on "personalized recommendations", which isn't very intuitive.

This will be a hot topic for sure in the coming weeks and months as brands,
especially those in the heavily-regulated pharmaceutical industry, grapple with
how Google Sidewiki impacts their control over their brands online assets.
For more interesting discussions on the impact of Google Sidewiki, check out
these blog posts and discussion threads:
Google Webmaster Central Discussion on Sidewiki
Danny Sullivan's: Google Sidewiki Allows Anyone To Comment About Any Site