My content site can go a week without updating, although I can have some sets pre-uploaded and I carry the new HTML with me on a diskette or CD to upload to bring the new material online.
For this purpose, I bring my laptop with me. My otherwise shitty local ISP has dial-in numbers in all the major cities, so getting online is no major problem.
My pay site, much the same answer.
E-mail is the big pain, because I HATE laptop keyboards. I'm a cheetah on a standard keyboard, but I'm a snail on a cramped laptop keyboard with all those redefined and multiple-purpose keys.
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Producer of truly original teen/young woman-oriented adult content at
Wonders of the Unseen World