Finding Twitter Hashtags
As I'm figuring out Twitter one thing sort of eludes me: how to come up with hashtags that might actually get found. Let's say I want to tweet a photo with a fairly specific subject, one that I'm sure is generating some interest. But a hashtag has to be an exact match to a search. How do I find out what hashtag(s) people are actually using, and looking for? I can try searching on a few possibilities, looking for ones that are found in a lot of recent tweets. But that's just trial-and-error and if I don't guess right I waste my time.
It seems like there should be a Twitter function - or maybe a 3rd party site or app - where one could enter some likely tags and be shown current statistics for those tags AND for similar/related tags you might not have thought of.