It's very hard and uncomfortable to add shortcodes without a tool like other plugins do :-/
[netsposts include_blog='2,13,11' days=30 titles_only=false show_author=true thumbnail=true size=290,90 image_class='alignleft' auto_excerpt=true excerpt_length=50 date_format='j. F Y' list=3]
doesn't show any post at all - just nothing. The blog IDs are right.
What is wrong please?