I think that the modernization of the Geisha world has both good and bad sides.
When you type something related to Geisha on the internet sooner or later you are going to come across a picture/ pictures of Geisha presented as prostitutes. The idea is just all over the place! And people who don't know anything about it will certainly believe it (like my best friend for example, with whom I had huge fights about the topic) and they just avoid talking about it, and finally admitting that they are wrong.
The good side is that for people who are interested in the topic of Geisha will always have places like this, where they could dive even deeper into the world of Geisha and explore it in a proper way.
With modernization of Japan I feel like tradition has to make certain changes to survive. I heard that there is a restaurant (in Kyoto I think) where they hire Maiko to talk to guests and tourists who come there. I always feel a bit sad when I see a beautiful Miko or Geiko surrounded by tourists. It seems like all her beauty vanishes in the crowd.
I like the idea of Geisha Spring, which is held annually in Kyoto where a small group of tourists comes and talk to the Geisha, finds out something about their world directly from them, and that's great because in that way you learn to respect them, and they still remain mysterious in a way. But opening the doors of the Ochaya to everyone, would certainly reduce the value of Geisha and their profession.