To use Likestagram effectively you need to think about your strategy. A lot of people use the Instagram tags that they like but you have to use Instagram tags that the people, who you want to target are using in their pictures. You have to align your mindset with their mindset.
To get more ideas as to what tags you should be using you can go to http://iconosquare.com/ and enter a tag that you have interest in. You will see more results that are also linked to the tag that you have entered. You can now obtain more tags that are similar to your tag.
Another thing that you can do is to check your competitors and what kind of tags they are using. There are many other Instagram profiles in your industry or interests. If they are using tags then you could see if they are useful for your Instagram profile.
Think about which Instagram tags you want and Likestagram will be the most effective to your account.