That is entirely up to you. You can give more than one person permission on the same blog or you can give each a separate blog. You can even give several people their own blogs and then aggregate them in the RSS Feed Aggregator.

Hope it helps,

Joe

Create a page and add a blog module.

There are 2 ways to give permission. You can create a role and put the user in it then give that role edit permission on the page.
Or, since you probably don't want to create a role for each user, it is also possible to give a single user edit permision at the module level.
After you add the blog to the page, click the gear near the blog title to get to module settings and start typing the user's name in the dropdown that says User That Can Edit Content it will find the correct user that matches what you type. Then save it and that user can edit the blog.

Also you can use the friendly url feature in combination so that you can have blog urls like yormojosite.com/username.aspx

Hope it helps,

Joe

Hi,

Its because the blog really comes from the mojoPortal.Features projects and is copied up to the web folder by post build events so it overwrites your change.

But, you should not make such changes, if you do that you are forking the code and it will be difficult for you to upgrade without losing your changes or creating conflicts. If you really must change the code then you should clone the feature first.

Hope it helps,

Joe

Hi,

If you cloned it then you are working with a custom feature not the mojoportal blog, you will have to debug it and solve it yourself. I'm not a mind reader and I cannot see your work so I have no way of knowing whether you cloned it correctly but if you are a developer you should be able to step through the code and figure out what its doing. 

This is not a question about site administration, its a developer question.

Best,

Joe