Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

In what state should I register my web-based LLC?
In this case not only that you must register in California (either as domestic, or as foreign if you decided to form elsewhere), you'll also be on the hook for back-taxes if you didn't do it from the start. FTB is notorious for going after out-of-state LLCs that Californians open in other States trying to avoid the $800 fee.