A few vendors are indeed dishonest or make use of shady or poor business practices, as I elaborate on this thread here:
http://www.blackhatworld.com/blackh...s-clickbank-sites-you-should-not-promote.html
However, most of time when affiliates notice a drop in sales for days or weeks, the reason is simply seasonal fluctuations. For example, I am involved in the health niche, which is as evergreen as you'll get. However, even in this niche we notice strong fluctuations.
For example, products that have to do with how the skin looks (eg vitiligo), will do best in the summer months (May - Sept) as people are concerned about how their skin looks when they are wearing short clothes.
Products that have to do with weight loss/muscle building will do best in January (NY resolutions) and the summer months (people going to the beach etc...)
Products that have to do with issues such as alcoholism and other 'vices' will do best in January for reason above
Products that have to do with nasal issues (e.g. nasal polyps), will do best during allergy/pollen season.
Products that have to do with foot problems (eg shin splints or plantar fasciitis) will do best during track season
Etc etc etc...
In addition, you will have periods of the year where digital products in general do better or worse. For example, December tends to be a poor month for digital sales (e.g. ebooks) as people are spending their money on physical products (gifts, decorations, etc...).
Moreover, when you get a general economic dip, (eg government announcing adjustments in interest rate, the dollar dropping compared to FCs, political shocks due to changes in gov or changes in foreign/economic policy etc...), you will get a drop in sales in general (both online and offline). Watch the stock indices such as the nasdaq or dow - when they are going down day after day, chances are your CR/sales will be poor. These "dips" may last for just a few days, to a few months (eg during foreign crisis that affect us economy), to a few years (whenever you have a "bear"market)...
If I look at my earnings for the past 12 months, I can see that my best month's earnings were over 6 times more than my worse month - that's some massive variation right there!! If people think that us internet marketers are making a fixed x dollars each month, they are very wrong.
So before people get spooked because their sales and conversions are poor compared to the previous month and jump ship, they should try to understand the online and economic scenario and adjust their expectations and techniques accordingly. IM, as any business, requires dedication, commitment, and a know-how of all the factors that affect the business and sales, if you want to be in this long term. If a person is not comfortable with seeing their earnings fluctuate, then they should stick to a 9 to 5 job which will give them a 'sure, steady' income, and avoid the 'hassles and uncertainties' of internet marketing.
Mancar