Basic domain name question

So far I have ranked #1 using:

keyword.com
key-word.com
keywordextraword.com

In my opinion it boils down off-site SEO.

Well this is a tough subject, you are bound to hear it all, however, consider this, the average Spider, (robot) that crawls the web is limited to a certain amount of data, when indexing a website, that amount of data can change, perhaps its 256 characters, perhaps its less, how much of that data, is devoted to the domain name?

All this is unpredictable.

I have experimented in depth with this concept, and from my tests, I can say that before is better, however, that is not to say that after is not effective too, but before seems to be the best, I have tested using three, keywords, and the first two seems to make it but the last one does not.

That may change in the morning, (see what I mean by not being predictable.)

For example, I tested out a theory, on Gardening, and so I found three keywords I liked, garden, plant, and the last, was hydro, so I got those three and tried it out, it worked fairly well, I still get a good bit of traffic, from that, so the main thing is the research, do the home work, and find out where your traffic is coming from that will determine how you use keywords in domain names.

Here's a tip: Go to Google search bar, type in your keyword(s) and stop. A list of keywords will drop which is what people are searching for but if all of the dropped keywords are taken then add - my, i, e, u, like mydogtraining.com or something that will flow with your keywords that you think somebody will type in to search. Or at end, the number 1, guide, tips, news, etc.

Browse the forum and you'll find a some great ideas.