Inevitably, the spam industry gave rise to an anti-spam industry. According to a Radicati Group report titled "Anti-virus, anti-spam, and content filtering market trends 2002-2006", anti-spam revenues were projected to exceed $88 million in 2002 - and more than double by 2006. List blockers, report and complaint generators, advocacy groups, registers of known spammers, and spam filters all proliferate. The Wall Street Journal reported in its June 25, 2002 issue about a resurgence of anti-spam startups financed by eager venture capital. ISPs are bent on preventing abuse - reported by victims - by expunging the accounts of spammers. But the latter simply switch ISPs or sign on with free services like Hotmail and Yahoo! Barriers to entry are getting lower by the day as the costs of hardware, software, and communications plummet. The use of e-mail and broadband connections by the general population is spreading. Hundreds of thousands of technologically-savvy operators have joined the market in the last five years, as the dotcom bubble burst. Still, Steve Linford of the UK-based Spamhaus.org insists that most spam emanates from c. 80 large operators. Now, according to Jupiter Media, ISPs and portals are poised to begin to charge advertisers in a tier-based system, replete with premium services. Writing back in 1998, Bill Gates described a solution also espoused by Esther Dyson, chair of the Electronic Frontier Foundation: "As I first described in my book 'The Road Ahead' in 1995, I expect that eventually you'll be paid to read unsolicited e-mail. You'll tell your e-mail program to discard all unsolicited messages that don't offer an amount of money that you'll choose. If you open a paid message and discover it's from a long-lost friend or somebody else who has a legitimate reason to contact you, you'll be able to cancel the payment. Otherwise, you'll be paid for your time". Subscribers may not be appreciative of the joint ventures between gatekeepers and inbox clutterers. Moreover, dominant ISPs, such as AT&T and PSINet have recurrently been accused of knowingly collaborating with spammers. ISPs rely on the data traffic that spam generates for their revenues in an ever-harsher business environment. The Financial Times and others described how WorldCom refuses to ban the sale of spamware over its network, claiming that it does not regulate content. When "pink" (the color of canned spam) contracts came to light, the implicated ISPs blame the whole affair on rogue employees.