关于MySQL关系数据库设计的快速提示

I have a webapp I'm making that stores user information, and their preferences regarding the app. Is this something worth splitting into two databases? I was thinking one table "users" with fields "id, useridfromFacebook, facebookRealName" (so 1, 52052025295, Alex McP), and then have a table "preferences" with fields "id, useridfromFacebook, emails, colors, SomeQuoteorSomething" (4, 52052025295, 1, 441155, 'Only The Good Die Young') I have a webapp I'm making that stores user inf