In order to comment successfully, always proofread your comment. No one should ever be giving away personal information and should not be commenting meaningless things as well. Possibly a compliment would be the appropriate way to start off  a comment, to make small talk and show the writer you can relate. Next, one person should add extra information as to  help the writer out or just make a connection. This leads into the next trick, making connections. A commenter should make a connection to further understand the article and gain interest. Finally, the post should end with a question. A comment should ask the writer about their post, or possibly how they could changge it.