Underscores and SEO

[denvercardonations]

DO underscores attached to words kill the word for search engines? I have filed name things like this: "Denver Colorado AA Meetings (34)_Lakewood AA Meetings"

The software I use to rename uses underscores, does that mean search engines will see (34)_Lakewood as one word? Hence the rule of thumb being to use hyphens instead?

 

[PTTed]

Best explanation:

Probably not a big deal. For file names I can't see it being a deal at all. For URL's - you would ideally want dashes. But again, not a big deal.