Cointelegraph (owned by Minergate) is not in good standing with the community. I wonder why the owner of xmrwallet.com would choose to advertise there of all places...
It probably still reach a lot of people, which is good to attract new people to get to know Monero. [edited: 1740 views of this article until now, which is not really a big number IMO] Probably better then other media news. And of course in the end it all comes to price. Maybe Cointelegraph has lower theirs due to smaller demand.
Anyway, good to see development on making using Monero easier for average user and on increasing it's utility.
My suspicion is they didn't pay for advertising at all, because they're part of the same organization. Honest community members wouldn't want to have anything to do with Cointelegraph (let alone pay for the association) unless they are new and completely unaware of its history.
EDIT: The Bytecoin/Minergate devs can't help but out themselves. It's like they're winking at us, in some kind of ego-driven need to let us know they're still here. I've never understood it but it fascinates me.