When the amount of words in the domain is 2-4, the amount of words really doesn't matter as much as people think. I mean word count is ALWAYS secondary to word QUALITY anyways, i.e. there are some dictionary word domains still available in .com because they're shitty words, and there's some names that are 6+ words taken in a bunch of extensions because the keyword phrase is either searched a ton or is a strong slogan or brand type phrase that would hook people in well. But the difference between 1 and 2 word can be huge and the difference between 4 word and beyond can be pretty big. The only time I ever go beyond 4 words is if there are 2-word TERMS involved...for instance I have a lot of 5-word "bad credit" domains, whereby bad credit is 2 words but is effectively 1 term as it's a strong niche within credit. In fact, here's an example of one I don't have but a 5-word domain that would be an easy 4-figure if not 5-figure domain: CreditCardsForBadCredit.com. The term is searched nearly 50k times per month, high CPC term, trending up, etc. Definitely a long name for sure, but the terms are strong enough for it to be a very valuable domain and it's no surprise the name is taken in 14 exts.
Getting down into 2-4 words, 4's not that much worrse than 3, 3 not that much worse than 2. Quite often people focus on shortness of name and less words so much that some really strong 3-4 word domains are sitting available and I'm always happy to scoop them up and sell them. I had BuyCarInsuranceOnline -dot- org for instance - 4-word .org but sold it recently for mid $xxx after having several domainers/domain investors ask about it before. Also have had/sold WhatWouldYouLike -dot- com for $600 I believe...that name isn't even a generic phrase but more a brandable slogan phrase and as such can actually be more sought after by end-users because they can use it nicely in ad campaigns.
So yea, if your phrase is strong, then # of words isn't going to hurt it much, but when you get into the 5+ word terrain you really have to make sure you get a strong phrase as the length of the name will turn a lot of people off. The more words/length, the more possibilities of names, the harder your name is to remember, the longer it takes to type in and the more room for typos and spelling errors, etc. 3-letter .coms aren't a min $3,500 - $4,000 for nothing.
