Toe clips have grown out of fashion but many still use them. I use White Industries pedals with Bruce Gordon half clips, so not quite toe clips on one of my bikes. They are a happy medium between full toe clips and flat pedals.

"Should you use toe clips?" Well that depends on the type of bike you ride, the kind of riding you do and your usual foot wear when you ride a bike. It also depends on your skill level. On one hand they are minimal cost, so you could try and see if you like it. On the other hand flats are just as efficient, why spend the money.