Periodic reminder that ‘micro-’ (μ) is an SI prefix with the well-established meaning of a submultiple of 10^−6 !

Thus:
– ‘microtransit’: 10^−6 the size of a transit, (think: fairies, dust mites) or capacity (1.3-seat Shinkansen).
– ‘microblog’: 10^−6 the word or character count of a blog. Maybe a single serif or i-dot?

Also:
– ‘nanobrewery’: 10^−9 the output of a full-size brewery = a few hard-working yeast cells.