Can anybody explain how exactly Outbrain works?

Yesterday Google announced that from next year, it will use the rel="sponsored" attribute in order to identify and understand the paid links. What do you guys think about it apart from just being no-follow?

For affiliate products specially for softwares, which type of ads perform well, auto-ads or manually inserted ones?? I have seen that many auto-ads perform really well in this type of situations. But others say that if I don't want to loose money then I should choose manually inserted ones.

Does Keyword Density of Yoast plugin really mattes? I have got recommended to this plugin from several sources.

What should be the strategy in order to get ranked in the Medical niche? Just asking, food for thoughts.

I was wondering that which niche can earn the most money from displaying google adsense's ads. I know that technology is one niche but how about the others?

How do guys cope with an attack of web 2.0 sites? I am not saying about a couple of sites but hundreds of them. And they keep coming from different sites of wordpress, blogspot etc.

Many sites is getting manual action penalties from Google recently. Are you guys seeing this too?

I am not sure what is exactly causing it? Because inbound links are good I checked them and there are no pattern among the sites as well.

Which ad agencies provide Twitter offers? Like the sponsored tweets and all but for CPL or CPA offers.

Here are two types:

1. One product email (which is solely for product promotion) per email campaign. Which will contain atleast 10 emails that will include free stuff.

2. Every email should have a slow pitch for the concerned product after throwing them free stuff and weekly newsletters.

Which one is more preferable?