What Is Esellerate?

While doing a general inspection of files on my C-drive, I came across C:\program files\common files\eSellerate\WebControl365.dll. I do frequent scans and this was the first time I had seen this file. There was nothing I could find that tied it to and application or process. I tried to rename it, but permission was denied. Can anyone tell me what it is and where it came from?

I booted in safe mode and deleted the folder. When I boot in normal mode, nothing seems to have broken. However, a scan of the registry revealed over a dozen occurrences of "eSellerate" and "WebControl365.dl". Before dealing with them, I would like to know what it is that I am dealing with. If necessary or desirable, I can restore the folder.

eSellerate is an e-commerce provider that processes orders for various companies and used to make purchases online. It also appears to be related to a product to help sell software and a download service.
eSellerate
What is eSellerate
eSellerate Download Service

So some site that I visited that had a statement, "add to cart to see discounted price" blazoned on their web site must have been an affiliate of eSellerate. At least that would explain the origin. It does not, however, give eSellerate permission to install a file on my computer, especially one that I do not have sufficient authority as an administrator, to access.

Thanks for the quick response. I guess I will not restore the file and will run a registry cleaner to hopefully eliminate the many entries containing the offending names. It is comforting to know that I had not been maliciously invaded; invaded to be sure, but not with hurtful intent.