I was hoping to register a domain name, The combination of the key words in the domain name meant that there would be two the same consequent letters;

for example

Home Entertainment in the domain would look like this HomeEntertainment.com and in browser would appear as homeentertainment.com. Would it be more feasible to register home-entertainment.com with a dash in the domain name?

In my opinion HomeEntertainment.com with no dashes would be OK.

But saying that what if you had to register nottooold.com. I had a similiar issue. NotTooOld is readable but nottooold would be a bit difficult and you would be better of with not-too-old.com

If it was my choice, no dashes in the domain, even though I registered few in the past. Having said that nottooold would be pushing it and I would think twice.

its not recommended in fact. But as not many domain names are available right now, that's okay. But still the domains that are having the 'nondash' letters get preference on search engines.

Agreed. No dashes are definitely better.

Matt Cutts of Google has also said that more than 2 dashes in a domain name is a big red warning sign to them and they generally would rank badly.
That said I do own one domain name with 3 dashes, but I wouldn't buy it again if I know what I knew now, so it's just become a test site for me.

Lucky it's 3 not 2, otherwise I would also be in trouble with couple of my domain names. Marketingweb, can you share the link where Matt Cutts announced these news?

Yes, 2 dashes seems to be ok. One of my sites http://www.web-directory-australia.info/ has 2 and it does pretty well in SERPs

I'm actually having trouble finding the link specifically that says more than two are bad so maybe I didn't have it 100% correct. I', sure I remember someone doing some specific experiments on this though.

Matt Cutt's thing was origionally about dashes vs underscores in URL's, with the advice that dashes are better. Obviously domain names themselves don't allow underscores. Matt's example of a spammy domain is really what I was getting at, although this is to the extreme!

http://www.mattcutts.com/blog/dashes-vs-underscores/

Another couple good articles to muddy the waters further:
http://ezinearticles.com/?The-truth-abo ... s&id=50146
http://www.a1businessforums.co.uk/forum ... names.html (A slightly opposing view).

I prefer the one without dashes

I can't see Matt Cutts saying that.. IF he said something along those lines it was most likely that dashes mean a space and underscores mean no space. Does 2 dashes look spammy? Yes, but if you have quality content that does not matter.

No dashes is better despite the two e's, I have many domains like that.