Top 2 means you've been part of the site for 2 years. Next year it will say Top 3 Elder (interesting technical info: there is an alt text on the image, but it doesn't show on mouseover since it's using the ALT attribute for display when images are disabled/missing/loading. For example, for Top 3 Elder, the alt text is: Award - Elder Status: Member for at least 3 year)
Level 5 is the customer level, the number itself is just an internal value that isn't really important to users. The levels are:
- Unknown (usually for Exiled users, i.e. banned)
- Visitor
- Past Customer
- Current Customer
- Subscriber