For most, it would take just minutes. Often there are handy plugins (e.g. for Wordpress), or an easy way to enter your Disqus site ID and have it automatically pull Disqus in (e.g. in Tumblr) … but in all cases you can just paste in a few lines of our universal JavaScript. I could probably do it right now in about 90 seconds if you timed me ☺.

There are of course more sophisticated implementations, e.g. integrating your own registration system, creating custom widgets, etc. but even those are fairly straightforward and can be done whenever convenient vs. all upfront, and usually in a matter of days. Some of those deeper integration capabilities are part of our premium add-ons or our VIP service for larger sites (http://disqus.com/for-websites/vip), but most of the core features are and always will be free, including all of those that we've talked about in this Q&amp;A.