No one seems to have found a page so far that is specifically about "My World" pages which eBay are apparently considering will function as the replacement for the "About Me" pages.
From what Col has said, that the rules for the My World pages are "basically the same" as for the About Me pages has recently been posted by Allan somewhere on the AU eBay pages (which some of us can't use for health reasons). It hasn't been disseminated as an announcement by email, and there's no new guideline page as yet. That means the majority of eBay users don't know about either the replacement of My World for About Me, or that Allan says the guidelines are roughly the same. (Most people trying to find what the rules are for the My World pages would not be looking on the page that addresses About Me pages.)
From what's been said, they're clearly not ABSOLUTELY the same, since as Col says, "you cannot create a clickable link as html is not allowed on Myworld". And that's the inequity Cupie was addressing, from what I can see. Sellers appear no longer to be able to insert a clickable link to a page which shows off further information about their goods. You're able to "link to your own Web site or individual Internet store where you are offering to trade, sell or purchase your goods or services. However, you may not link to any page within online trading sites that offer goods from multiple sellers either in a fixed price or auction format." - That you can link to your own website or online store is fine... but the link is not clickable. It's just text. For someone to visit your site, they need either to copy the address or type the address into the address bar.
Col points out that some internet users won't bother doing that, and won't know how to do that. I can readily imagine that some users will try clicking onto the text repeatedly, find it does nothing (because it's not a link, just text), think that "Blast, the link is broken", and shrug and move away.
Cupie points out that the advertisements appearing on your eBay listings (disrupting search results, intruding onto the effectiveness of sellers' listings, etc.) are unwanted by you (the person paying for advertising on a page) and are also clickable. That means a buyer only has to accidentally click onto one of those links to be moved away from eBay (from those search results where your listing appears prominently because of your well-chosen heading, or from the actual listing page, the information of which you have designed with care and for which you are paying).
At the very least, it would seem fair to enable the links on the About Me page to be functional.
I haven't experimented with this, as I'm not a seller on eBay, and as I am not interested in promoting my
"favourite sites" as a buyer or an individual, so I may be talking utter tosh here. I will try it out to confirm that the links aren't clickable on the About Me page, and secondly to see whether there's a way to make it clickable.