As an independent newbie my most common rejection is from SS for focus, so have increased sharpening and downsized to 4MP which seems to get them through. Handful of DT rejections all seemed fair, I couldn't argue with any of them! 123RF seem extremely cautious on copyright for unbranded everyday objects, but upload process is great. Fotolia started out being very fussy then the next batch suddenly all got accepted, so no idea what happened there. GL are very fair and rejected only a handful - all justified. Alamy accept everything! It is an interesting learning curve hope it gets easier with experience.

I have deactivated 23 since the Google drive disaster was discovered, can't afford to do anything more at the moment as I lose exclusive royalties in 2 weeks and finances will be tight!