This is a personal project that hopefully will get traction and the actual increase in usage will allow the system to learn and be more effective. The technology uses semantic analysis.
For small businesses or brands that are currently using twitter to generate social media. Objective is to increase virality of tweets by suggesting a hashtag that will increase the amount of eyeballs that will see that tweet.
None really, go wild. There is one suggestion: use the # (hash) symbol. Ignore the .com part of the brand.