Just letting you know that the tag #bwphotocontest is a specific tag for a specific contest.
Please don't use it for your 7 day black and white challenge - it's confusing for the judges of @daveks black and white photo CONTEST as your photos end up in the #bwphotocontest stream.
If you could let others know by saying so in the instructions that would be very helpful going forward.
Thanks and have fun!