So the new HamsterSoft Ebook Converter has been getting a lot of attention today. It's a relatively easy to use conversion app that runs on Windows. It features a drag and drop interface, broad output support, and it seems to be very popular.
Nevertheless, I'm going to pass. I've encountered HamsterSoft before and they are on my avoid list.
A few weeks back I developed a sudden need for a RAR archiver. I didn't have one installed yet, so I went looking and ended up with a product from HamsterSoft. It worked just fine, and I was in a hurry so I ignored the awkwardness of the interface.
But then a few days later I had to reboot my computer. The HamsterSoft app started itself on boot, and I couldn't find a way to stop it. This is a no-no in my book. If I can avoid an app that does this, I will. Also, the apps keep forcing to go to the Hamstersoft Facebook page (and it even does this when I deleted the apps). The latter just pisses me off, and since a replacement is easy to find I deleted the app.
I already have an alternative to HamsterSoft Ebook Converter; it's called calibre. Calibre is the best open-source ebook library, format conversion, and ebook reader support app out there. It supports more formats and it supports transferring your ebooks to your ebook reader.
Update: A commenter pointed put that this app is based on calibre, and it actually gives credit. Also, if you're looking for another reason to use calibre, here's one: Hamstersoft requires extra downloads that calibre does not.