The exchange's representatives have been active in the slack,soliciting feedback and making a list of improvements for the exchange.
I've been extremely impressed with their responses and encourage anyone who has questions to go visit them.

https://cosstokenswap.slack.com is the link.

Regarding the VEROS scam accusations:
From talking with the dev, here is the deal: Some of the dev team for COSS (Not the entire team. It is NOT the same company) worked with a cryptocurrency called VEROS earlier this year. VEROS was an ERC-20 currency token that ran on the etherium blockchain.  To encourage users of the currency to bring in more people to the community, most of the currency was locked up at the start, and that as more people were brought to the platform, it would be unlocked. It was neither an MLM nor a scam, it was used in a number of stores, there were ATMs that accepted it, and it did okay for itself.  But it had a fatal flaw: under the system, the VEROS company would have to pay the gwei for gas transactions.  This worked fine when ETH was 10$, but as ETH grew to 20$, then 50$, then 100$...  The gas transactions became so expensive that the business model was unsustainable and the business had to close down.

There's an important lesson there about the future of the Etherium blockchain, but that's off topic.

VEROS also got involved with an affiliate called Excallit, which was a pure MLM scheme.  If you google "veros scam" most of what you see relates to Excallit.  Veros's team wrote the marketing plan as a consulting job.  This was a mistake, and the community representative has owned up to it.  He was neither defensive nor evasive about it.  I was very impressed with his openness and willingness to talk to people.

If this was at ICO stage, I wouldn't touch it.  MLMs are sleazy stuff and even the slightest hint of association with one would turn me off.  But we are not at ICO stage.  The exchange is up, running, and working beautifully for a new product: It did 500,000$ of business today, according to coinmarketcpa, and handled it all without a hitch.  It's better looking and more pleasant to use than both coinexchange.io and liqui.io, and I personally prefer the design to bittrex. I've spoken with both their community representatives and their support team and I've been happy with them both.  

This product is a beauty, and I'm glad I bought a giant stack of the coins.  Since COSS shares the fees, it means that I'll be getting paid in whatever the most popular coin is.  My first payment comes out in Sunday.  Exchange volume is still small, so I won't be getting much, but I should be getting some SUB, ARK, BTC, and of course, even more COSS.  It's like proof of stake, except instead of being paid in more COSS I get paid in whatever most people are trading.  

I get the association with VEROS is sketchy.　If I'd caught it during ICO I would've assumed this was a "take the money and run instead of doing what they said they'd do" game.

But if this is a scam then what is the scam?
The exchange is up and running.  It works.  It's listing coins.  You can buy things on it and sell them, and transfer them to your MEW.  I've done it, so have tons of people. They have strict KYC procedures (You can't trade over 2k a day without providing some ID) and a responsive support team that I've emailed with.

Why would they put in strict KYC procedures for their exchange if this is a fly by night operation?  They're costing themselves serious money by restricting their exchange volume in this way.  You'd only do that if you were planning on staying open for a while.

It can't be a "take the money and run" thing, because they took the money to build an exchange, and built a working exchange.
They can't be planning on not doing the payouts, because the formula for the amount of money you should be getting is easily calculable, the order books are all public, and the CEO's name is attached to the project. If he tried to defraud investors like that he'd go to jail.  Why risk that when the exchange is up and working and making money?

So if you think it's a scam, what, exactly, do you think they're going to do?

How does this coin handle the liquidity issue that killed Wagerr? (I.E. the superbowl comes, everybody bets on it, the superbowl ends, everybody's trying to sell their coin at once, the price tanks hard.)

Someone saw the money that JesusCoin was pulling in and wanted in on it, I guess.

How do you get a slack invite?

I would also want to know what happens to unsold coins as well, since the target for the crowdsale was around 35 million, and it's currently standing at less than 1 million.

So it's... a cryptocurrency + a t-shirt?

I'm afraid I don't quite understand this.

Seems like it might be kind of fun. I'm in.

Does it uh... do anything?

Or is it just an asset you made on Waves with their asset maker?