This is mainly note for me for future reference (ideas seem to pop out of my head quite quickly…). In future, I plan to make following modules:

• to track user with cookie (even if he/she is not logged in). [Done, see:  User Tracking Interface]
• to perform REPAIR TABLE on all tables from Admin panel
• to split customers into groups randomly (for randomized tests). For example, We want to know if new ‘Buy Now’ button attracts customers to buy stuff. We could create two groups [old_button,new_button] and present them two different buttons. Contribution would provide basic statistics like order conversion ratio, average order size, average order total etc.
• to split images across few subdomains. It’ll speed up page generation by browser.