adding affiliate allow blank code ejejcsingle fold help link links negatively open post reading site started target window

I have just started adding some e-junkie affiliate links to my site and I've noticed that this is the target code, target="ejejcsingle", and this doesn't allow a new window to open. I would like to change this to, target="_blank". My question is two fold...

What does "ejejcsingle" mean?

Will it negatively affect my links if I change this?

Thanks for any help anyone here can provide.

From reading another post, am I to understand that changing the target link is OK?