Google has released Sidewiki, a new feature which allows users to leave comments about pages they come across while browsing the internet.
Sidewiki gives individuals the opportunity to post their opinions about different websites. User comments are available in a separate window which appears alongside the page in question.
While many may feel the desire to post scathing reviews on the sites of rivals, users should be aware that all comments are moderated. A statement from Google revealed the process behind the software:
"Using multiple signals based on the quality of the entry, what we know about the author, and user-contributed signals such as voting and flagging, we work hard to ensure that only the highest quality, most relevant entries appear in the sidebar. Most of the engineering work for Sidewiki was dedicated to this ranking algorithm."
The feature also allows other users to 'rate' comments left by other browsers and report any spam which has slipped through Google's net.
The application comes packaged with the latest version of the Google Toolbar. Users must also have a Google account in order to leave comments.
A rolling stone
Biz Stone, the co-founder of Twitter, has said the company has no plans to introduce advertisements on the site this year. Stone, speaking at the 140 Twitter Conference in Los Angeles, said the company was concentrating on improving the site's functionality before introducing paid advertisements.
"Any kind of approach toward advertising is going to be a while. We're not thinking about that just yet," he said.
Stone went on to reveal that the company was considering launching a premium service – complete with analytical features – later in 2010.
Yahoo gets a lick of paint
Search engine Yahoo has revealed a raft of new features to its search engine. The company unveiled its alterations to the site earlier this week.
The redesign includes anti-malware and parental control tools as well as greater prominence to the note-pad software Search Pad.
Larry Cornett, vice president of consumer products at Yahoo Search, said:
"We designed this new page framework so that we can introduce and experiment with new search applications and features faster than before. Today's launch is just the beginning of innovations to come."
Money makes the wall (posts) go round
A study from Nielsen has revealed that the spend on social media advertisementing has more than doubled over the past year.
The research found that US companies had spent over £67 million on online marketing in August 2009. This compares to a spend of just over £30 million 12 months previously.
Jon Gibs, vice president of media and agency insights at Nielsen's online division, said:
"In the past, advertisers had significant concerns with social media advertising," he explained. "The considerable increases we've seen in adspending over the past year suggest that many of these concerns have subsided or been addressed."