I'm new to SEO and want to create several sites in different niches. My question is, what's a good amount of daily searches for a particular niche keyword? For example, Market Samurai tells me a certain phrase receives 100 searches a day, and if my site was ranked first in google, it would get 70 clicks. This is a fictional example, but my question is..is it worth it to pursue small amounts of daily traffic like this? If not, how much would I need? Thanks.