edit: I'm talking about egregious cases where the name, location, picture, and work history are false, not the exaggerations you mention. The profiles have few connections since they do get flagged and recreated with a new false identity...
> If you feel that a profile may be fake or that it is inappropriate, you can report it. A profile may be fake if it appears empty or if it contains profanity, fake names, or impersonates public figures
They may use a real name and they may have worked some of those companies just lie about their technical level, experience, what part of the projects they worked on, etc. Those may not be covered by the reporting guidelines.
edit: I'm talking about egregious cases where the name, location, picture, and work history are false, not the exaggerations you mention. The profiles have few connections since they do get flagged and recreated with a new false identity...