I've been looking around at the bridging options for this topic.
I'm very keen that my users only need to sign up once.
The two I've looked at most, are single-sign-on (which doesnt seem to work or I'm just not getting it but it seems to have a lot of problems anyway) And wp-unitied, which seems a must better system.
However, I have very little experience with phpbb3 and I've found it a bit daunting.
What I after is either:
A. a really simple plugin to install, activate, and away I go (unlikely I know)
or B. a bit of insight / step-by-step guide / help into working wp-united.
Any help would be appriciated.