I am planing to start forum on my blog to increase links and help my customers . I have tried a lot to find best forum plugin which integrate with my theme with out theme coding so i have decided to start forum o subdomain so can some one explain me i am doing right .
Forum is one really good, but you have to understand the structure of the Forum first to build right functionality for the users. At the same time, it would take lot of time to build the same as it is not that much easy to build a forum.
Basically a sub domain is treated as completely new domain So there is so much effect on SEO. Some time you have to face a lot of problem in SEO Like some of directory and social bookmarking sites requires main domain.