can keywords seperated by commas be read by Google?

[whatson]

So as we know keywords in the URL are helpful with your seo. For example, /keyword1-keyword2, or keyword1_keyword2, and we know that Google is able to identify the two keywords. However, what if it was more like, /url=keyword1,keyword2? Would they also be read by Google?

[keyplyr]

AFAIK both commas & dashes are read as spaces. How much keywords count in URLs anymore is debatable.

[Wilburforce]

I don't know about currently, but historically keyword1-keyword2 would appear to a search engine as two separate keywords, while keyword1_keyword2 would be seen as the string keyword1_keyword2. Keyword1-keyword2 has always been OK, so why bother with alternatives that might not be?

[martinibuster]

Google isn't a keyword search engine. Information retrieval has come a long way. It's not critical to add keywords in the URL anymore.

The best approach, in my opinion, is:
1. To use one or two meaningful keywords so that a user looking at the URL will be able to determine the topic
2. The use of a short and meaningful URL makes the web page easy to remember, easy to recommend, easy to link to.

Commas are non-standard. If you can avoid using commas then I would recommend avoid it. But if you're stuck with them then choose one or at most two keywords and stick with that.