I obviously didn't write the shit below so to cut it short and put this into some sort of context ...
- Disqus is for leaving comments on posts (if you wish to do so).
- Google/DoubleClick shite is because I've implemented a Google Analytics tag to see how many vistors I get etc. Being honest, I hardly ever use it, looking to move to more web server log stuff instead.
- YouTube is YouTube.
The latest version of Firefox/Chrome will usually block most crap and if you haven't already, install uBlock Origin Firefox/Chrome extension to block even more crap.