Whichever method you decide, Twitter will return back results with tweets where users employed the hashtag. The upside to an advanced search is that you can define dates, so you don't return hashtags since the beginning of Twitter time (unless, of course, that's what you want).

Hashtags can be overused. Chris Messina, a San Francisco-bases social media consultant (who was credited as first formulating the hashtag idea in his blog), noted some of the drawbacks in a post about .

"Already it's been made clear to me that the use of hashtags can be annoying, adding more noise than value," Messina wrote. "Some people just don't like how they look. Others feel that they encumber a simple communication system that should do one thing and one thing well."

As a result, he said users should make use of hashtags sparingly and only when they bring additional context to a tweet that would otherwise be absent. For instance, take these examples: