Over on Midcurrent.com Phil Monahan has crafted a section titled Ask the Expert, Answers to Everyday Fly Fishing Questions. Once every couple of weeks he answers questions like: "How to get on a fly fishing 'Pro Staff,'" "What makes a Fly Pattern 'New?'," or "What's the difference between landlocked and Atlantic Salmon?"
One of his recent Q&As dispels any questions you might have about strike indicators--including how and when you should use certain types. Check it out over on Midcurrent.com. - TR