I don't know why people bother doing this. I don't commend too often, usually only if someone does some truly outstanding stuff. To be honest I almost always forget commend is even there at all. One thing I know for certain though, is if someone ASKS for a commend at the end of a match, I will most definitely NOT commend them. Bonus non-commend points for people on the other team that ask in all chat for commends, and even more bonus if they spend time earlier in all chat with trash talk. I really just don't understand these people, why bother begging for commends?
There was ONE guy ONE time on my team that said "hey guys, if you liked my support play feel free to commend me :) " and he was a great support so I was happy to because he wasn't begging and was deserving of it with his play. These beggars are sure something else though, geez.