Check http://blogalia.com/
There are some professional astronomers blogging over there, doing divulgation. They might be interested. At the very least, they will link the site.
There are some professional astronomers blogging over there, doing divulgation. They might be interested. At the very least, they will link the site.
IMHO, greaterskies.com is interesting as a project, but:
- I don't think anyone will pay for simple visual star charts: there are free sites, free desktop programs and free tablet/mobile apps out there.
- If not for visual, but deep sky: there is 3Atlas from José R. Torres (9, 11 and 13 mag sky atlas): http://www.uv.es/jrtorres/tools.html Available for free in PDF.
- The marketing problem: find your tribe! There are some forums, like cloudynights.com (or http://www.asociacionhubble.org/portal/index.php/foro in Spanish), but this are mostly for dedicated observers.
My 2 cents.