Putting URL's in an eBook?
I was wondering if it is okay to put a few URL's in my eBook. One is to my site where I have an email contact address in case anyone wants to get a hold of me for publishing rights. I do have links to several of my books on my site, but I don't sell anything directly. I have links to Amazon and Kindle, and will put links to Nook and Barnes & Noble.com when my books become available there. Can I put the URL to my personal website in my eBook?
Also I have listed several non-profit organization's URL's to offer support and access to resources for those reading my book. Most of them are .org, one of them is a .net. Is it okay to have URL's to non-profit organizations in an eBook?