Please check the requirement and let me know timeline and price.
I will provide you html of page. don't worry abt design.
Specifications for the Project:
What I need or require::
-Members can create and reply to posts via email see point 2 below
-All posts appear on the Web site as threaded conversations
Here are the additional features we want:
-hash tags like twitter see point 3 below
-public comments on each thread by non-members of the group
Current Database Used:
We've been using Mailman to power our mailing list, but now we want something more powerful and user friendly
 Import our old Mailman posts
Members should be able to create and reply to posts via email. This will then show up as threaded conversations on the website. Each conversation should have an area where public comments are allowed (like a blog).
Inside each post, users should be able to create hash tags, that on the website populate a tag cloud and is clickable by users. So for example if in a post some says: "i love #cats", the #cats should be clickable and link to all other posts containing that hash tag (like twitter). In addition to that a tag cloud showcasing the most recent tags in 24 hours should be possible (you can see this in the mockups I attached).
Please check attachment.