Tiny Bark Bugs
 

I noticed about a year ago that there were many tiny little bugs all over the bark in my phalaenopsis pot. These bugs are the size of a little dot, pretty much like this -> .
They are are of a greyish/black shiny color.
After one year I thought they were gone because I simply didn't notice them (probably because they are so small). However, I have just noticed they are still there and I'm starting to worry if these little buggers could potentially harm my orchid. I must say I do not see any damage on the orchid, not on the leaves, nor the roots, nor on the flowers. It really seems like they are only interested in the bark. Should I be worried? Or should I just let my orchid and the little bugs coexist?