Would you swallow the eggs of parasitic worms such as hookworms or whipworms to cure your allergies?

I read about this in a German magazine and found it highly interesting and highly disgusting at the same time. A well-written Wikipedia article explains the idea.

http://en.wikipedia.org/wiki/Worm_therapy

Helminthic therapy, a type of immunotherapy, is the treatment of autoimmune diseases and immune disorders by means of deliberate infestation with a helminth or with the ova of a helminth. Helminths are parasitic worms such as hookworms and whipworms.

Helminthic therapy has emerged as one possible explanation for the low incidence of autoimmune diseases and allergies in less developed countries, together with the significant and sustained increase in autoimmune diseases in industrialized countries. Current research and available therapy is targeted at, or available for, the treatment of Crohn’s disease, ulcerative colitis, inflammatory bowel disease (IBD), multiple sclerosis, asthma, eczema, dermatitis, hay fever and food allergies.

Have I whet your appetite or have you just lost your appetite when pig whipworm eggs are being mentioned?

How promising is this idea?