Compose an exhaustive list of websites hosting flash sales

We are looking for websites, whose business model is to daily host multiple sale events - flash sales. Usually these flash sales are about one specific brand or specific clothing type. Your goal is to gather biggest possible list of websites that host flash sales - at least 50 to 100. We aim at US and European market so only focus on websites that offer shipping to those areas. Some of the websites require registration (see a few on the example ones) - we are very interested in those! List them as well! To help you find what we want, see the following examples. Also ask around on shopping forums(!) for websites you might not find in google. Examples [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] Report format Apart from website url, we need to know a few more things: 1. Whether website requires registration or not. This basically means that to view sale details you have to subscribe or register 2. Do they list all sale events on one page? Some suppliers list everything on their main page, some split into sections (for example, “Men’s” on one page, “Women’s” on another page, “Home/decor” is also separate) Company name | Website Url | Registration required? | Lists all sales on one page? Ideel | [login to view URL] | No | Yes ...