I think it's a VERY contensious issue judging by the other threads on this site... Some people - including my physio - think it reduces injuries, by minimising the impact on heel, achilles, knee and hip. I have suffered from really bad shin splints in the past, and now I'm training for my 2nd FLM I could feel them coming back again. Since changing to forefoot (you're right Juliefrazz, it's not on your toes exactly) running last week I haven't had any of usual shin, foot or knee pain, which is v reassuring. The trouble is, it's making me a lot slower because the other muscles I need to use are not sufficiently developed.
That said, my run home last night felt a lot easier... and I was getting back to my normal speed. Not sure I'll be able to keep it up for 26.2 miles though! Fingers crossed...
So yes - Damian - it might help sufferers of heel injuries... but I'm no expert, and I'm sure A LOT of people on this forum would tell you otherwise. So it's probably best to read the other threads (look up POSE method), or to see a physio...