Can I add hashtags and mentions to RSS Tweets

1. Twitter has serious policies and rules in place to keep manipulation around a subject or a person as minimum as possible. To achieve that, they don’t allow automated hashtags. Manually adding hashtags to Tweets is a common practice and can do no harm, while automated ones may be used for manipulation. More information can be read here on Twitter's blog.
2. If some hashtags are included in the feed source, that might not be a problem unless it repeats the same hashtags in every post. From a blog writer's standpoint, we think they use different hashtags on each post, and that’d be ok.
3. We do support most of the feed specs out there, as explained here. If any website including Google tools providing a native feed, we can parse and use it.