Brian, this will be a huge loss to everyone interested in Manx family history.
I know you have spent most of your time over at least the last 10 years going through every page of film after film (or fiche) extracting names, dates, and other details to add to your indexes, as well as transcribing numerous wills for your names of interest, and the IoM censuses.
- And then when you had finished one index or project you would make it available to all, and start on the next!
As Greg says, it is an amazing body of work, and we are all indebted to you.

Sue