Is using the logo tag in sprites good or bad?

Question

When building web pages, one of my colleagues displays any logo using the CSS background-image property, rather than embedding the image using an HTML t

Answer 1

When in rome, do what the romans do.

About logo in IMG tag, official words from Google.. http://www.youtube.com/watch?v=fBLvn_WkDJ4

Reason for keeping in tag: To have good search engine visibility, and when someone google's for ur company name, logo should come up in image results.

Reason for keeping in css-sprites [background image]: Faster load time

Big Brands: All big brands have a media section on their website, also a press section where they keep all their logos in downloadable format.