Mylotters, how many online businesses (such as PTC, PTP's etc) do you maintain?

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I was quite surprised, that after I got into earning online thru PTCs and the like, I am now maintaing 10 sites daily. Quite addicting! Well, with the thought that each site would give you a few cents a day, definitely, the best way to go is to get into as many sites as possible. How about you, have you made a count of the number of online earning sites you're maintaining on a daily basis? How long have you been doing it? And will you go for more?