redzone - 11:30 am on Nov 16, 2000 (gmt 0)

JK321,
The majority of spammers are "too lazy" to go through the effort required to ip/ua deliver content. It requires work, and most take the easy route.. It is so hard to prosecute anyone online, that the majority of spammers don't even try and hide "stolen pages".. If their domain get's banned by an SE, it's just $15 US for another one..

The majority of individuals that IP/UA deliver, are professionals that either:
1. Don't want their research stolen
2. Have client's that don't want their content altered