Integrate into new site - or add to existing?

Say I had a site containing Blue, Green and Red widgets.
lotsawidgets.com

If i then had enough information to create a Yellow widget site, would you create another site (yellow-widgets.com) or add it to the current site (lotsawidgets.com/Yellow/)?

 

I would create a new site personally.

The extra links can never hurt.
Saying that, I would also add another section to the current site about these yellow widgets.

That way, you just added two of your own sites in the same range of results.

 

That's a very interesting topic actually.

It depends how popular I thought yellow widget would be. If the other widgets would be of great benefit to helping yellow widget be a success then I'd stick it on the same URL.

If yellow widget could be interesting enough that it would stand it's own ground then I'd definitely get a unique URL for the yellow widget due to better ranking for the domain name

 

well the yellow widgets gets > 1000 searches alone...

im liking the idea of posting it in both places

any downsides to this?

 

Host them on seperate servers.
Make them look completly different and don't duplicate the copy.

If you do that, I can't really see why they would suffer.

Don't forget the sandbox effect though.

 

I'd add new widgets to the existing site. The size of a site impact SERP and EPC if you run adsesne