That was well put, like a true domainer. I will give you your due, as I am not a true domainer. This is a part time hobby thing for me.
I am a computer guy by trade and degree. By virtue of my job, I have a lot of time on my hands in which I spend a portion of it playing with domains and websites (just for giggles mostly).
I have only come on the scene about 5 years (late 2009) back and made many of the same mistakes that all the noobs (as most call them) do.
In that time, I have also speculated (I dont consider this investing) in .CO after their first (re)launched into their current form when many naysayers stated that it would crash and burn. I have managed to make *profit* from that extension that not only covered all my *noob* mistakes but put me 4 digits into the black (everything added and subtracted including renewals/drops).
I am pretty happy with my position in domains as a whole.
With that said, I am a 1 man show. Everything I do has be only me. Its all been first hand trial and error to include making websites and the SEO that goes along with them.
I have come up with a couple of conclusions during my time of doing this (off and on).
1) An *AGED* .COM is always going to be your best bet *BUT* they come with a price tag.
2) AGE goes hand in hand with back links and back links are the driving force in your SEO ranking.
4) Keywords and exact matches count a *LOT* in SEO, and so I would hazard to guess, more then most understand.
5) (understanding what I said in #1 and #2) The right of the (dot) does not matter so much as the left of the dot when it comes down to getting your domain placed with certain key words and tricky phrases.
Knowing ONLY what I have physically done myself, I have come to the conclusion that a great domain will have what everyone knows to be a "premium" keyword that is NOT restricted by the intent of what is to the RIGHT of the dot.
What I mean by this is, given the keyword "POKER" which most would agree is a "premium" word, and the extension .FLORIST... it just wont work together. They are way too off base from each other.
Given the same keyword "POKER" and the extension .HOW, that actually works. Whether you think its pretty or not is strictly a you thing. Given your point of view, WikiHow is backwards (should be HowWiki by your logic).
Me personally, I like the way most "Keywords" flow with the extension .HOW.
Computer How makes sense to me. Running How, Program How, Code How... All of these make sense to me.
As far as your "Shoes Running"... again... the left of the (dot) matters. You will be hard pressed to find anyone who will type in the search criteria exact match keyword(s) Shoes Running in that order.
However, you would have a better chance (all things being equal) of someone typing in the exact match keyword search of "SHOES" at which point in time your (Shoes.Running) would have a better chance of getting the hit (all SEO ranking dependent but if you ranked #1 spot on Google for the Keyword "SHOES" you are golden).
At the end of the day, if you don't like .HOW, then don't speculate in .HOW.
I happen to like this one so I am in for 5 domains.
Cheers