New matching pledge drive! Donate at a "Plus level" ($35, $50, $100, $150, $300, or $600) in November and it will be matched one-to-one, effectively doubling your donation. An Erowid supporter has offered up to $5,000 in matching funds. Now is a great time to join, renew, or make an end-of-the-year tax-deductible contribution. Erowid Center needs your support.