A drug like Viagra is among the most sought after product on the net. To stay ahead in the competition that involves many online Viagra vendors, different tools like keywords optimization, back-links etc have been incorporated.
Just look for yourself and you will be surprised at the harm that's been already done, using the tool for wrong ends. Undergo 'Viagra' or 'buy Viagra' search in the search engines and you will find that over fifty percent of the sites that come in page one have Buy Viagra, Buy Cheap Viagra, Discounted Viagra, Viagra Online, Best Price, Best Place to purchase Viagra etc. written all over the page, and yes, they don't forget to give a link towards the pharmacies where you can buy only the very best and economical Viagra.