I am looking for help or plugin for the following conditions of my site
I am using wordpress 3.0+ version. my site is about School where students will get register and post their experience and share knowledge.
Once the user is created automatically a new Category should be created with its Reg. ID and user name which will be displayed as below mysite.com/jan2345
each user will be able to create new blog which will be the sub category that user's category
for example: jan wants to post his expedition to Europe so he will create new blog from frontend but in backend that will be a category with atleast single post which will be the default post and have default parent category as jan2345. This post url will look like mysite.com/jan2345/europetour
User will log in and be able to see only his Blogs and post for edit.
if there is any more suggestions and any way i could do this please reply me
FYI: i am not able to use Wordpress multisite functionality bec that creates a 9 new tables so, if there are 1000 users with their site details so there will be more than 9000 tables in database ....
If there is any other solution where i can create site and that will not increase my tables in data base
Thank you all in advance