speedlights?

[Nikon_D40]

what exactly do they do? my friend says when your doing continous shooting, iit flashes every time you take the picture. is this true?

 

[Big Mike]

What do they do...they flash :er:
That's just the name associated with accessory (hot shoe) flashes from Nikon.
For example, the Nikon Speedlight SB600.

Canon uses Speedlite...ie: Canon Speedlite 580EX.