Some podcasters, especially those who are novices in show recording usually get some irritating popping sounds every time they speak into a microphone (an example is the annoying p and b sounds). The solution to this problem is to use a pop filter in your mic. A pop filter is something like a screen that blocks the popping sound.
You may create an improvised pop filter by using 6″ Embroidery Hoop, Generic Pantyhose, Split Flex Tubing, Wire and Black zip ties. This will cost you less than $10. For details on how to create an effective homemade pop filter, read the detailed instructions here.
But if you don’t have time to assemble your own pop filter screen, there are lots of pop filter that is available in the market for around $20. Some example of commercially available pop filters are those that can be seen at ZZounds and Pro-audio.