How many comment backlinks perday...?

Suggest me, how many comment Posting backlinks is best Perday, through "Auto Approve" Comment Posting... (to save site from google spam bot)...?

These comment backlinks are almost worthless, you are better off spending your time writing some nice content, or rewriting already existing content in your niche, and submitting to high PR, google favored domains...

lol comment backlinks aren't worthless. There isn't really a top number for how many to build but you want to gradually increase your number built per day. Building 10k in one day may get you noticed. Building 10k logarithmically over several months probably won't.