This is one other question that I kept wondering about, and I haven't seen it addressed anywhere.  Maybe it's one that just doesn't matter, but I wasn't sure.

Is there anything I should keep in mind when choosing a name when registering for the various agencies?  Do you use the same name at each one you're registered with?  While some people seem to use their real names or possibly their business name, it seems like the vast majority don't.  I didn't know what the pros and cons were for this.  I would think you'd try to keep the same name throughout for some kind of brand awareness, if that exists beyond a Yuri or Andres, or if it just plain doesn't make a difference.

Is it worth putting thought into, or should I just register and be done with it?

Thanks,
Lisa

Thanks, Traveler, that helps me a lot.  Although I haven't yet applied anywhere else, I did register as a user at a couple of places (not Shutterstock, though, so I'll use the referral link), and I'm trying to use an abbreviated form of my photo biz name where available. So I will hopefully be LFPhoto, as long as it isn't used!

As you can see from my name nicemonkey, I also went down the professional route! 

No in all seriousness I dont think it really matters but something memorable is always good.

If you ever fancy chancing your arm at vectors I have put some tutorials on my site.