hi neil, welcome to mobileread ! thank you for your very generous offer, i'll take a look and maybe send you a little mail later (although, to be honest, i'm not really a fan of pdf

but a free book is always nice !).
just a question though, i see you are located in france, although from your name i guess you are not french, any plans to publish french books as well ? that would be brilliant, as there is really not much digital content available still in french. and we've got a french forum as well here, if you'd like to drop by.
as for formats, i agree with what has been said so far, it would be brilliant to make your books available at least in epub and mobi ; that should cover the majority of devices available, and if they are drm-free they can easily be converted if necessary. personally i only buy epub now if i can help it, and practically all european publishers are standardising on that format.
please do tell your technotops they are welcome to take a look here to learn about the formats, how to make them, etc. and ask any and all questions they might have.
meanwhile, it's great to see you joining in the discussion around here ! besides being incredibly knowledgeable you'll find people here are also really friendly.