If you post a comment, it is important that it be substantive. Because if you just say something like "Good deal" or "I like this", people will either ignore it, or give you minuses. To get a plus for a comment, it needs to be helpful.
Also hit sites like Amazon , target and the bigger web sites that people follow if you want a big score. Me I go after niech deals and do not have a mega score. But someone has to find the yarn and craft sales.