uberdanger
I Love YTtalk
It wouldn't, and I would be glad to explain why.Well, It would help me grow my channel
A shoutout on it's own doesn't do anything for a smaller channel, it may have an influx of subscribers immediately, but if the shoutouted person doesn't make video with/live up to the content of whoever shouted him out, people will realise that they subbed for whoever gave the shoutout, and not the actual channel.
Shoutouts are pretty useless, if I were you I'd learn how to use Reddit, that's a great way of getting traffic.