
Originally Posted by
Rumline
Yes, but...lenders will see that account as being authorized user rather than your own account; they know you're not responsible for making the payments. There are many different FICO score types and versions, with different algorithms that drive the score. They will weigh the benefit of being an authorized user differently. If you're applying for a mortgage, for example, that authorized user account won't help you at all. Not that OP's friend is buying a house anytime soon; I'm just saying in general re: authorized users.
Like you said it's the best quick fix method but it's not a silver bullet.