I've seen projects featured for weeks on end and others only for a couple of days. When do projects become un-featured?

Just a random question. Thanks in advance!

A new project gets featured every day so if someone doesn't scroll, then 5 days. If you do scroll, then up to 20.

Featured row: 20 days, approx. one day in each slot.
Top Loved: 7 days, order is random every page refresh.
Top Remixed: Same as Top Loved.
Curated by [Scratcher]: Slot and time up to the curator.

Also, a curated project can later hit top loved or top remixed, and a top loved or top remixed project can later hit the other row.
Additionally, it is possible for a project to “fall off” the front page in top loved or top remixed, and not get its full 7 days in that row.

I think that's basically it.

Following the topic of this subject, how do projects get featured? Does there need to be a number of views to be featured? Or what ..??

Questrial wrote:

Following the topic of this subject, how do projects get featured? Does there need to be a number of views to be featured? Or what ..??

Featured projects are picked by the Scratch Team.
Featured projects are (according to Paddle2See):

1. simple projects
2. complex projects
3. projects that show an innovative use of Scratch
4. project that promote collaboration and remixing
5. projects that show the diversity in our community (gender, age, culture, country, interests, etc)
6. project that different kinds of people would find enjoyable
7. projects that inspire

You can suggest projects to be featured here, but you can't suggest your own.