[pvg]

Keep in mind that there will be zillions of these in short order and many will also be free. Since they all use the same Apple-provided matching/blocking engine, there isn't going to be much in the way of innovation there - there won't be a content blocker that is 3 times faster and uses a quarter of the memory of some other content blocker.

It'll be down to config UI and the quality of their rules - the rules are all going to be derived from publicly available rule lists. There will very likely be publicly available lists in Apple's format quite soon as well.

Marco Ament comes out looking best on the last point by being completely upfront about where the rules in his blocker come from.

[lstamour]

I would add to that responsiveness in updating rulesets, ability to add your own rules (especially graphical) or customize rule sets by country, and security features like noscript or phishing warnings as possible ways others could stand out in future. We might end up seeing special purpose Content Blockers, site-specific ones...

[mtgx]

It will be interesting to see if Adblock Fast can be faster. It says it only uses 7 "rules", that I think someone said must be machine compiled, and it's arriving today on iOS9 as well. It may not have a great database, though.

https://www.producthunt.com/tech/adblock-fast

[pvg]

Those '7 rules' are a giant OR concatenation of a zillion rules, lifted from somewhere else (i.e. the usual publicly available sources.)

https://news.ycombinator.com/item?id=10192391

It's not going to be any faster or slower than any other blocker using a similar number of conditions.