Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Can signing up at optoutprescreen.com improve my credit score?
Sounds like a case of false causality.  If somebody is taking the time to sign up at opt out sites, then that same person is probably making other smart decisions with their credit, causing scores to rise. Optoutprescreen.com does not help your score, the other actions taken might.  People seeing different results can probably be tied to the timeframe they signed up.  People who signed up then took care of their credit vs. people whose credit was already good and then signed up. A 10 pt bounce one way or the other is not significant.