18 clicks earned $1.91 - Good?

It depends on the site. But, it's okay to get paid $1.91 for 18 clicks on a download site.

 

its low , try filter away lousy ads , use image ad to improve ur CTR % .

Text ad to me is very lowly encouraged.

 

Earning mostly depends on the source of traffic that is coming from when they click your ads.

 

18 clicks and you only earn $1.91 ? That's really bad.. lol you should get at least 20 cents per click, sometimes it goes to a dollar.

 

Today we got approx over 350 so far and earned less than 7 cents per click! The level Google pays these days is pretty insulting and my guess is its going to lose them a LOT of webmasters in the medium term.

 

That's not good, but no nearly as bad as I did today, when I got $0,17 for 9 clicks!!!

 

Depends. Use some tool to analyze clicks. You can get anything from $0.01 to few $10 for a single click. Depends on keywords. Maybe you could add some specific related content. Do some search on

https://adwords.google.com/select/KeywordToolExternal?defaultView=2

to find some keyword ideas.