Even if I tried to contribute answers and suggestions in other topics, it is very hard to gain merit. Which topics require quality answers and comments while people really willing to give out merit?
There's no such thing as easy merits. You need to read a lot and contribute what you've learned to the forum which is in a very constructive written English. You need to have impact to the readers for you to get merits. Merits depends on the readers' point of view. You can't please anyone with the posts that you are doing so better take some time and effort to create posts that are substantial to everyone reading it.