COMMENT TO BE ADDED.
Don't just add me without commenting. If you don't comment to be added, you definitely won't be.
I used to add almost everybody that commented, but my friends list has gotten too large to continue doing that. I am much more likely to add you if you actually tell me a bit about yourself, where you found me, why you want to be on my friends list, things we have in common, etc. "I added you. Add me back?" doesn't tell me anything.