After long time just want to update my topic,anyone have new negative sides other than I have mentioned in the first post. 
Adding one more point to OP,
6.Merits were given for the bounty threads and singature campaign threads which are almost has nothing to contribute to this forum.
Example: https://bitcointalk.org/index.php?action=merit;u=137185
Adding one more point to OP,
6.Merits were given for the bounty threads and singature campaign threads which are almost has nothing to contribute to this forum.
Example: https://bitcointalk.org/index.php?action=merit;u=137185
You can see the profile of this man...He got the negative trust for doing this....
Some of the members are doing merit trading ,If the have been caught ,they will be punished definitely. There are lot of member's who are giving merits to the quality post.They also use to post different type of challenges for giving merits.
I believe that don't think about the abusers/spammer/merit traders etc. This is the good platform for getting knowledge and sharing your knowledge....use it for your improvements. Slowly slowly one day ,you will reach at your destination according the your work.