vshears: please explain why Mozilla (or variant) is unlikely to happen for RISC OS. In technical details, please.
I won't spoil your fun by giving contrary reasons.
Should people contribute to NetSurf - perhaps, perhaps not. And before anyone jumps in, I'll point out I talk to the NS people nearly every day, and I'm pretty sure they will broadly agree with me, at least in principle, if not in details.
I would still strongly argue for people to contribute to ChoX11 - the number of programs which will literally "just work" once it is more complete is very large indeed, and includes a number of browsers. Certainly, none will ever be as fast as Netsurf (which is now exceedingly quick), but there's more at stake here than just that.