Feedbro - Advanced Feed Reader - Read news & blogs or any RSS/Atom/RDF source. Feature highlights:
Hover Zoom - Enlarge thumbnails on mouse over.
Feedly - The content you need to accelerate your research, marketing, and sales.
Imagus - The extension is intended to complement image features that (I think) is missing from Opera by...
Inoreader - Dive into your favorite content. The content reader for power users who want to save time.
Image Max URL - Help find larger or original versions of images, including a customizable image popup feature