For my latest Magento ecommerce project I just noticed that search engines indexed some URLs with annoying params like ?dir=asc&order=position or ?limit=9. Also some unnecessary URLs like catalog search or checkout page.
During my last Magento project (Magento Version 1.4.1.0) I noticed the bad image quality of product images in the list view, detail view and also the zoom image. Usually show owners don’t care for loading speed and wanna show their products in high quality instead. Not with high image compression like Magento’s default setting.
The solution is simple if you know where the default setting is hidden: