Relevant factors could include the background of the purchaser, the amount of information that the issuer has about the purchaser, the nature of the offering and the terms of the offering.
Experienced lawyers may also have a sense of whether the amount of severance the employer is offering is within the usual range for the relevant profession or industry.
Because web 2.0 companies have enabled such as massive amount of user-generated content, it has become more difficult to find personally-relevant businesses, media or other content.