Chris Garrett posts a worthwhile post titled 10 Ways To Lose RSS Subscribers, each of which I’d say apply to losing any type of blog reader at all. Here’s his first one:
‘Hardly post and when you do it is to apologise for not posting – I don’t mind an irregular posting frequency providing when you do post it is something worthwhile and valuable. We all know people have other priorities in their lives, and an apology is obviously well meant, but please include the apology as a PS. on the end of a worthwhile post. And do not post three apologies in a row.’
Read the other 9 points
I’d sum it all up by simply saying that the way to gain readers is to ‘develop a useful blog’. I think if you give your readers something that they want or need and they’ll put up with almost any mistake you might make (massive generalization I know – but it’s what it comes down to to me).