ON GEMATRIA:

Games with Gematria
Llewellyn Journal

Is gematria a valid and useful technique for investigating anything, or is it nothing but mental exercise? If it is useful, can it apply to anything other than Hebrew scripture? Is it even taking things too far to apply it to the Aramaic of the Zohar? How about non-Hebraic names, such as Bill Jones or Aleister Crowley? How seriously should you take correspondences that you happen upon in your reading and investigations?

[...]

Not very.

New Age, but sensible and worth a read.