It's definitely something that we can do, but it just depends on the angle theymos is taking, and what his motives are. If its to drive more traffic then the content needs to be exciting, and I think a news outlet would be the better option, and then showing unique discussion of this news on the forum.
I think we already have tons of contents which are really useful. It will take days to bring out (list) even some of them. However, we need better arrangement of the contents IMO so that, newcomers get everything in one place without getting bored or lost. We also need to give them enough education about forum environment once they join.
Marketing is a must to attract outside users. Marketing could be instant one (pay per click) or long term (SEO with targeted Keywords) to get organic traffic. Look at the Bitcoin Cash guys - they are spending way too much money (email marketing, hosting events, paid search engine advertising
1 etc) to market their shitty altcoin.
1Not sure if this is a paid ad on google. Keyword: "bitcoin"

@: Jet Cash and...
We can all help Bitcoin Talk to maintain its popularity by adding links on our own sites. It's a very small guesture of thanks to the forum.
We can but I am not sure how it will help. What you are talking about is - creating backlinks. What I understand is - you need high PR sites. In that case, most of the sites out there we personally have - do not have higher PR than BitcoinTalk which means it will not help BitcoinTalk as much as it will help them personally. I certainly am sure that if I backlink my personal blog with bitcointalk then my blog will get more benefit than bitcoinTalk since my blog does not have that much high PR than bitcoinTalk.
If someone has high PR website then this will help a bit though.