I don't think i will write so many posts in 1 day ( 1-3 max ), maybe Saturday i can post more, Monday less, i know is better to have the same frequency but i don't think is always possible, so in general how many posts per day is safe ?
Actually its not depend on how many posts/day but it depends on quality of posts. As far as if you write useful and informative unique contents for your blog daily or 3-4 times/week then its good IMO. DON.
Like he said quality of the content is very much important Best quality post 1 per day is sufficient if you have no time...you can write in the weekend and set them to be published in week days
Yeah, that's what I did before I started my website. I wrote about 5 articles in Word, and saved them for when I got everything ready. You could do this too, just write extra articles, and every day, or every other day, just copy, paste, and publish
One single posts daily without any good information and quality are too much but if you are writing quality posts with unique information than 4 to 5 are good and give little time to promotion also .
Too much for who? Don't forget you write for the readers and as they said quality is the key here. A few posts a week are sufficient.