If you work for the federal government, you don’t need to "hide" when you use Flickr, YouTube, Vimeo, blip.tv and Facebook because the General Services Administration on behalf of all federal government agencies has signed an agreement with the above mentioned social networking sites, so personnel can use them freely.
Under the agreement, agencies can immediately begin using new-media tools that let people post, share, and comment on videos and photos on the Web. Individual agencies must decide which tools their employees may use and how they may use them.
Staff at federal agencies can now go on Twitter because GSA found that its standard terms of service are "compatible with federal use."
As many other progressive institutions, the federal government obviously decided to
inform its clients "via their method of choice.”, which sometimes might be on social networking sites only.