1. If its allowed to offer such a server here on forums or not ?
2. If it is, Shall i create 1 thread and just update it when i have new tokens for sale or shall i create a new thread for every token
3. If its allowed is this something that the community will be interested in ?
Thanks
You are allowed, but you don't need to create a separate thread every time you are selling a token. You might end up spamming. It is best to just create a single thread with all the coins you are selling as well as their corresponding ask prices. Just update it regularly.
As for the community's interest, it will depend on the tokens you are selling and their prices. Just make sure it is significantly cheaper compared to their launch or ICO prices of, if traded, to their exchange prices. Otherwise, it might not spark any interest among users here.
Finally, I guess your tokens sale thread should be created in this board,
https://bitcointalk.org/index.php?board=161.0. That's Marketplace (Altcoins).
Good luck.