I love checking out About Me pages. Some are so creative! However, there are others which actually make me decide to buy  from another seller.
Here's what I'd avoid on an About Me Page, unless you are clearly targeting specific bidders and don't mind turning a fair number of them off.

1. Political viewpoints, especially if they are attacking or judgmental. There are times and places for sharing your views with members of the Ebay community but remember: your About Me page is like your Ebay "calling card." It gives a first impression of who you are. Politics on an About Me page, just as in conversations, can be tricky. Consider carefully if you want to put that on your page.

2. Think carefully about how you tie your auctions to any pleas for charity. Unfortunately, lots of news stories about people using "I'm dying of cancer" scams to drum up bids have made people suspicious of these. If ALL your auctions are listed as charity auctions and meet Ebay criteria for that, fine to say so. If you give a portion of your proceeds to a particular cause, you might want to add that. But think carefully about your wording. I'd suggest being matter of fact info ("A portion of all proceeds go to...."), not pleading and certainly not a "poor me, help save me" attitude. Again, you'll turn off a fair number of bidders if you sound too desperate, will make others suspicious -  and if you really need the money, you might get more by leaving out the pleas and simply listing and selling your items.

3. Too much personal info. Your bidder wants to know WHY he or she should buy from you. Appeal to your bidder's interests and concerns first. If you're an expert in a field related to what you sell, yes, definitely note that. Think of your About Me page as a casual type of resume, a bit informal but not too personal.

4. Think carefully about showing the inside of your home, especially if it is filled with collectables. That could be a security risk. NEVER forget that bidders and sellers DO have the right to request (and get) contact info on completed transactions. If you use your home for business, don't make it easy to scope out your home and what may be worth stealing.

5. Personally, I like to know about a seller's experience, listing and selling practices, shipping info, etc. Then I read the more personal info but I don't want to know that someone is one a 3rd of 4th marriage, is "learning to trust men again" etc.  Just my take.