Hi, I'm a blogger and I'm writing blog posts daily, which means I have to ping my blog daily. But I've heard that constant pinging can block my blog url and will be considered spam by the websites. I know some of the pinging websites: pingomatic, pingler, autopinger, pingmyblog, pinging, pingates, feed ping, ping that blog etc.. Can anyone please tell me how often should I ping my blog? Please tell me how many pinging websites we should use?