Do You Limit The Number of WEB 2.0 Posts on Each Account?

Hi,
Just wondering how many of you limit the number of posts you make on each of your web 2.0 accounts?

If so what range of posts do you find works best for you (i.e. 1-5 posts per account, 5-10, etc.)?

I'm not seeing the results I need in my current campaigns, so I'm just trying to figure out where it's going bad.

I appreciate everyone's input.

Thanks,
Con