The creator of the Time to Burn App has provided one of the most widely used online tools for the playa for your smart phone. While many people argue that devices like that are one of the reasons TTITD is in the middle of the desert, it is also more useful that the What Where When booklet because it holds a lot more events than are listed in it.
The What Where When booklet you get upon arrival, with the official sticker inside, can only hold approximately 15000 entries while there are a lot more than that on playa. Apps like Time to Burn and iBurn utilize the whole playaevents database. The more value added side of Time to Burn is that he has been able to ferret out many of the LGBTQ camps/events and associate the #lgbt hashtag that makes it more useful to our community.
Has need and technology voided the usefulness of the What Where When booklet? That is for the future participants to decide. We have the links where you can download your copy of the app for free.