Mashable reports that Blogger and Picasa Web Albums could change their names and become Google Blogs and Google Photos. "Google intends to retire several non-Google name brands and rename them as Google products. The move is part of a larger effort to unify its brand for the public launch of Google+."
While Google Photos makes a lot sense, replacing Blogger with Google Blogs is not a great idea. When people say "Google Blogs", they refer to the long list of Google's corporate blogs. "Google Blogs" is already used for Google Blog Search, but only on the homepage.
On the other hand, Blogger could be redesigned and use interface elements from Google+, Blogger's profiles could be replaced by Google Profiles, the commenting system could be revamped and integrated with Google+.
One of the reasons why Picasa Web Albums didn't improve too much is that it has always been perceived as Picasa's online extension. It wasn't a standalone photo sharing service and many of its features required Picasa. You couldn't upload more than 5 photos, download albums or edit photos without installing Picasa. Google considered changing Picasa Web's name back in 2008.
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