eBay Compatible Application designation from eBay
idunno about anyone else but I'd be leery of logging into "My Ebay" through a non-ebay site. Chalk this up as something not to do! I can bid on ebay on my iPhone throught ebay.com on the internet, i don't need this site or any other site. Sounds like a scam to me to gain access to your paypal account/personal information through this site.
As I can understand your concerns about safety and security, this is why I went through the trouble of getting eBay to do a Compatibility Check on the application. We are part of the Developer Program at eBay and they tested the application for more than a week prior to giving us the Compatible Application Designation.
You also do not log into the my ebay in the application. iPhoneMyeBay transfers you to eBay for authentication. See the faq section on iPhoneAppLab.
If you have other concerns then this should allay any fears you may have - you can now find the application in the eBay solution directory up on the eBay site.
If you do a search for "eBay Solutions Directory" in your favorite search engine and then on their solutions site search for iPhone in the solutions you will find us (SilkSystem).
I will post the link on the blog at our site iPhoneapplab.com.
As well check out who else has tested it and written about it in our blog entries including ZDNet.
On your second comment about just using eBay through the browser - absolutely you can - albeit with more taps and navigation. This app has been optimized for communicating via cell and wifi and for the iPhone display.
Thank you for your concerns and please take a look at iPhoneAppLab.com