For whatever browser you're using; what add-ons are you currently running? For me personally, I'm running AdBlock Plus (but only on certain websites) and Grammarly Spell Checker & Grammar Checker on Firefox. What do you use on your browser? Do you have any Firefox recommendations?
I only use adblocker, and even then I limit to an extent what website are blocked and what websites are unblocked. Its almost always disabled on smaller websites and forums.
Adblock is a the most common one that I use. Apart from that I use WebRank toolbar which helps to provide me information about a website without searching them individually.
Like most members who have replied so far I also have adblock installed. Sometimes I will allow a pop up add to go through but for the most part I just keep the advertisements blocked.
Grammar check is an interesting add-on. I never thought to install something like that lol. The only add-on I had (and recently installed) is something called "Stylish", used to make the graphics/layout of certain websites better/different than the original design.
So I'm guessing Flash Downloader downloads any/all Flash content? What do you use it for? Most sites I visit don't use Flash anymore so I've forgotten about it not being able to download.
uBlock Origin - An ad blocker that's easy on your computer's CPU. Been using it since I learned AdBlock Plus allows you to pay to get on an "ad whitelist", so that your ad isn't blocked.
Privacy Badger - A plugin created by the Electronic Frontier Foundation (EFF) for those concerned for their privacy. It blocks any tracking scripts often found on many websites.