As @augustlan mentions answering the questions you are interested in will help Fluther learn what you are an expert in but topic (tags) are the key.
It seems like quite a few users do not understand how to best get their questions seen by experts.
When writing a question adding correct TOPICS are vital to getting your question the best possible responses. Topic keywords will bring your question to the attention of those best qualified to give you a great response.
Topics are the last thing you add to a question and must be keywords separated by a comma. They need to be related to your subject matter and as descriptive as possible.
As an example if I wanted to know why a simple distraction could immediately shut down sexual intimacy then I would not just put a tag of “sex.”
I would get much better results by adding “sex, intimacy, psychology, intercourse”
If I wanted to know why my car steering wheel was shaking when I drove over 70mph I would not just put the keyword “car”
I would expand and use “car, steering, mechanic, auto, auto repair, tires”
Resist the temptation to add topics that do not belong. Topic keyword spamming or off-topic keywords makes the system less effective and can get your question sent back to you to edit.