Seo learning-Use commas in title

In the last release, the title of our merchant's homepage was changed to (PS: see the figure to prevent keyword issues ). This comma was not used in the past, and I was particularly surprised that this comma is still a Chinese comma. This is where I am curious. I searched on Google and asked people on Seo. The conclusion is:
1:Different keywords are separated by commas (,). keywords must be separated by commas (,). If Chinese characters are used as punctuation marks, the search engine will mistakenly think of them as texts ).
2: The optimization effect is not very obvious. Of course, optimization always requires optimization.

In this case, tell the SEO owner. For details, refer to the following URL:
Http://www.seobbs.net/simple/index.php? T3526.html
Http://www.xland.com.cn/article/14/72/0710/25361.htm
Http://www.oldyou.cn /? P = 13

Google Tag: Seo, Seo Learning