Link: or link: on Google giving diffrent results

[StevenWB]

I noticed today that lowercase and capital L give different results on Google:

Link:http://www.cisco.com/en/US/netsol/ns983/index.html
link:http://www.cisco.com/en/US/netsol/ns983/index.html

Which one should I be using to check backlinks?

Thanks

[ditoroin]

It's more common if you use lowercase keywords

[KeriMorgret]

Though the link: command is just an approximation. If you have access to Google Webmaster Tools, that will give you a more accurate count, but still not perfect. Also try Open Site Explorer and Bing's Webmaster Tools to get an idea of backlinks.