Im currently inviting members to my blog and im wondering if there is a limit to the number of members I can have and How many members are we allowed to invite per day ?
It depends on how much blogs you want if you require 50-80 blogs a day go with 5- 8 members, so you can decide members on that basis but make sure they must write good and relevant content, so that they can derive a good traffic for you.
You can have more blog team members as much as you want. It's a good idea if you have more members to improve your site because more articles will be published.
You can get as many member as you can. Quantity isn't the issue. The point is if the team can produce quality content. =)