I wouldn't worry about a possible burn out - that can only happen if something degenerates from joy in writing into (self-imposed?) obligation... Just like this: what is thought, felt, feared or hoped today belongs on paper in the blog today. If relationships build up here, even if you never meet in person, a post can also be simply meaningless or irrelevant: the sign of life of an acquaintance... And posts about posting always work anyway ;-))