Why should I keep my personal WordPress separate from my “professional” one? [closed]

It really depends on who your target audience is…

Keeping them together:

  • Pros:
    • It’s the real you.
    • You won’t need to worry about what goes where.
    • There’s always something (off topic) to blog about.
  • Cons:
    • Narrow-minded readers are exasperated by diversity. Especially if some of the topics you blog about can be controversial. (And narrow-minded readers are many.)
    • It’s harder to monetize, if that’s the stuff you’re into.

Splitting them on multiple sites:

  • Pros:
    • Readers always get on-topic content.
    • The signal to noise ratio will probably seem higher to newcomers.
    • Fickle readers don’t run away when they disagree on topics that may be controversial.
    • It’s easier to monetize, if that’s the stuff you’re into.
  • Cons:
    • It’s not the real you.
    • You’ll eventually grow tired of behaving like a schizophrenic.
    • There isn’t always something on-topic to say, so the rate of posting may occasionally suffer.
    • Your readers’ interest might fade faster: there’s only so much you can read on a topic before you move on.

Tip: if you end up setting up multiple blogs, consider maintaining a twitter account or a brain dump blog, for stuff that fits nowhere.