Promoting via YouTube is really easy. All that you need to do is to record your screen with Camtasia, showing people how your niche works / how to download / virus scan. Make sure after you're done with your video your WATERMARK your video, means you add link from your website on your video so if someone re-uplooad your video your website will be still here and bring you traffic.
Promoting via Dailymotion/Metacafe
Promoting via Dailymotion/Metacafe or any other video sharing site is same like YouTube. Just upload your videos to Dailymotion and Metacafe and read my YouTube tutorial again and do the same to your videos.
Promoting via Forums
Promoting via Forums is really boring but can bring you awesome targeted traffic! First of all you need to find forums related to your niche. Search on google for your niche + add forums. For example If my niche is Wireless crack then I would search on google for Wireless Forums. Register on 5-6 forums and make new HQ threads explaining people how your program/niche works. Make sure your posts are HQ to avoid getting banned.
Promoting via Blogs
Promoting via Blogs is very good to get HOT targeted traffic. How I'm doing this? Same like forums but instead of searching for forums on google i'm searching for blogs (blogspot)'s. Example if my niche is Wireless Crack then on google I'll search for Wireless Crack blogspot. In first search results few good ranked blogs will popup related to your niche. Open them and scroll down and find comments. In comments explain people that you're offering free "your niche" and give them link. Using this method I was generating around 200-300 visitors to my niche per day.
Promoting via Facebook
Promoting via Facebook is very different. I have my own method of promoting but I'm not gonna tell it because it will get saturated. So to get some traffic related to your niche just go to facebook and search for fan pages related to your niche. Post your links in comments and on their fan page. I'm pretty sure you'll get some visitors. Do this every week!
Promoting via Torrents
There are plenty of torrent websites out there available for you like thepiratebay.org, kat.ph, isohunt.com etc. This is how it goes. You upload the file you want on our website but you archive it with a password. This password you enter in a text file along with the download link. Then, you upload a popular torrent on any torrent websites by respecting every rule that website has. After that, everything is just about waiting and see the dollars rolling in your account.