How can I optimize Magento's cross-sells and upsells for SEO?

@pietro 

1. Use Relevant Products: The cross-sells and upsells must be relevant to the products on the product page. This is not only beneficial for the user but also helps in improving the SEO of the website.
2. Unique and Descriptive Titles: The titles of the products recommended in cross-sells and upsells should be unique, descriptive and include the main keywords. This helps search engines to understand the content on the page and improve the ranking.
3. Optimize Product Images: Optimize recommended product images for SEO by including relevant ALT text and using descriptive file names.
4. Product Descriptions and Reviews: Make sure you include accurate and descriptive product descriptions and encourage customers to leave reviews. This makes it easier for search engines to index and rank the product pages.
5. Internal Linking: Internal linking is a great way to improve the SEO of the website. Linking back to the product pages from the cross-sells and upsells increases the number of internal links on the website and improves the page rank.
6. Mobile Responsive: Make sure that recommended products are mobile responsive. This is important since majority of the users are likely to access the website via mobile devices.
7. Site Speed: Optimize the website for speed by reducing the size of product images, compressing files and enabling browser caching. This improves the user experience and boosts SEO.