Hey Tanushree, Putting the hashtags after the caption of your blog will help the Tripoto team to find your entry in the contest. And it also helps the other travellers to find it easily. Hope this would help you.
Hi, hashtag works like filter. If you want to search a trip related to a topic, all the trips tagged with that topic or name will be your search result. You can try with #gokarna #ontheroad #adventureactivity in the search bar for example.