Twitter has said the company will take advantage of people's habit of browsing the site

In a Wednesday blog post, Twitter said that when a user browses to a florist's website, the florist can choose to use the relevant data. And when these users use Twitter, the florist can make these users see their own flower ads.

Twitter also said the florist could record the email addresses of service subscribers and show them ads when they visit Twitter.

This kind of precision advertising is similar to the two forms of advertising on social networking site Facebook, FBX and "specific audiences" (Custom audiences).

Facebook and now Twitter are getting more advertising clues from old-fashioned websites like Yahoo. Yahoo has been tracking users on its Web site for advertising needs. For example, if a user browses to a Chevrolet website, the social media companies can use the relevant browsing data to display a Chevrolet ad for the user as they browse elsewhere. Facebook recently launched the "redirect Ad" feature (Retargeting ads, also translated into redirect ads, visitor recovery, etc.), and advertisers are very supportive.

For Facebook, Twitter and other social-media services, redirected advertising weakens the attractiveness of their advertising ideas at first. The initial promise of these social networking sites is that their ads are tailored to "social signals"--sign up for a Mexican restaurant on the Foursquare, or "Praise" Nike's Shoes on Facebook. The advertising effect based on this information is better than the traditional website banner ads. And from now on, those ads based on previous site access information and mailing list data received support from Facebook and Twitter. This may mean that various new forms of advertising will be mixed with many old advertising forms of elements.

A Twitter advertising product executive has previously said the company will continue to support the new advertising model. These patterns come from research into the way people post on Twitter, focus on the type of user accounts, and other social signals. However, the executive also said that with the "redirect advertising" and other existing technology integration, the effect of advertising will be better.

Twitter said the company would slowly launch new ads that would only be tested in the US market and would be limited to a small number of advertisers. The company said it would further promote the new ads if it received a good response from users and advertisers.

Consumer rights groups have expressed concern about the increasing number of Web services using user behavior information and the data being used for precision marketing. Twitter said on its own blog that the functionality provided by the company is guaranteed by its privacy protection. For example, users can choose not to let advertisers use their information for accurate ads on Twitter. But these people still see ads on Twitter.

In a blog, the digital privacy Agency's Electronic Frontier Foundation (EFF) has praised Twitter's efforts to advertise its privacy features.