That's probably because they were. Developers previously have uploaded various promotional images at resolutions suitable for the mobile Market, but the web mar

That's probably because they were. Developers previously have uploaded various promotional images at resolutions suitable for the mobile Market, but the web market seems to use resources at a range of different resolutions. Whilst I haven't tried it yet, I imagine that there will be a few more fields to upload appropriate images to, and frequently updated apps and popular apps will not suffer from this within a few days.